Common Weakness Enumeration
CWE-203
AllowedObservable Discrepancy
Abstraction: Base · Status: Incomplete
The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor.
204 vulnerabilities reference this CWE, most recent first.
CVE-2026-33425 (GCVE-0-2026-33425)
Vulnerability from cvelistv5 – Published: 2026-03-20 23:12 – Updated: 2026-03-23 16:48
VLAI
EPSS
VEX
Title
Discourse has inferable private group membership or existence via exclude_groups parameter
Summary
Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, unauthenticated users can determine whether a specific user is a member of a private group by observing changes in directory results when using the `exclude_groups` parameter. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. As a workaround, disable public access to the user directory via Admin → Settings → hide user profiles from public.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-23 16:48 UTC
CWE
Assigner
GitHub_M
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/discourse/discourse/security/a… | x_refsource_CONFIRM |
Impacted products
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CVE-2026-28490 (GCVE-0-2026-28490)
Vulnerability from cvelistv5 – Published: 2026-03-16 17:37 – Updated: 2026-03-16 18:17
VLAI
EPSS
VEX
Title
Authlib Vulnerable to JWE RSA1_5 Bleichenbacher Padding Oracle
Summary
Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to version 1.6.9, a cryptographic padding oracle vulnerability was identified in the Authlib Python library concerning the implementation of the JSON Web Encryption (JWE) RSA1_5 key management algorithm. Authlib registers RSA1_5 in its default algorithm registry without requiring explicit opt-in, and actively destroys the constant-time Bleichenbacher mitigation that the underlying cryptography library implements correctly. This issue has been patched in version 1.6.9.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-16 18:17 UTC
Assigner
GitHub_M
CNA
References
3 references
| URL | Tags |
|---|---|
| https://github.com/authlib/authlib/security/advis… | x_refsource_CONFIRM |
| https://github.com/authlib/authlib/commit/48b345f… | x_refsource_MISC |
| https://github.com/authlib/authlib/releases/tag/v1.6.9 | x_refsource_MISC |
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CVE-2026-26315 (GCVE-0-2026-26315)
Vulnerability from cvelistv5 – Published: 2026-02-19 21:22 – Updated: 2026-02-20 15:42
VLAI
EPSS
VEX
Title
Go Ethereum Improperly Validates the ECIES Public Key in RLPx Handshake
Summary
go-ethereum (Geth) is a golang execution layer implementation of the Ethereum protocol. Prior to version 1.16.9, through a flaw in the ECIES cryptography implementation, an attacker may be able to extract bits of the p2p node key. The issue is resolved in the v1.16.9 and v1.17.0 releases of Geth. Geth maintainers recommend rotating the node key after applying the upgrade, which can be done by removing the file `<datadir>/geth/nodekey` before starting Geth.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-20 15:32 UTC
CWE
- CWE-203 - Observable Discrepancy
Assigner
GitHub_M
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/ethereum/go-ethereum/security/… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ethereum | go-ethereum |
Affected:
< 1.16.9
|
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CVE-2026-26185 (GCVE-0-2026-26185)
Vulnerability from cvelistv5 – Published: 2026-02-12 21:54 – Updated: 2026-02-13 15:59
VLAI
EPSS
VEX
Title
Directus Affected by User Enumeration via Password Reset Timing Attack
Summary
Directus is a real-time API and App dashboard for managing SQL database content. Before 11.14.1, a timing-based user enumeration vulnerability exists in the password reset functionality. When an invalid reset_url parameter is provided, the response time differs by approximately 500ms between existing and non-existing users, enabling reliable user enumeration. This vulnerability is fixed in 11.14.1.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-13 15:58 UTC
CWE
- CWE-203 - Observable Discrepancy
Assigner
GitHub_M
CNA
References
4 references
| URL | Tags |
|---|---|
| https://github.com/directus/directus/security/adv… | x_refsource_CONFIRM |
| https://github.com/directus/directus/pull/26485 | x_refsource_MISC |
| https://github.com/directus/directus/commit/e69aa… | x_refsource_MISC |
| https://github.com/directus/directus/releases/tag… | x_refsource_MISC |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| directus | directus |
Affected:
< 11.14.1
|
|
| directus | @directus/api |
Affected:
< 32.2.0
|
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CVE-2026-25562 (GCVE-0-2026-25562)
Vulnerability from cvelistv5 – Published: 2026-02-07 21:57 – Updated: 2026-07-14 15:53
VLAI
EPSS
VEX
Title
WeKan < 8.19 Attachments Publication Information Disclosure
Summary
WeKan versions prior to 8.19 contain an information disclosure vulnerability in the attachments publication. Attachment metadata can be returned without properly scoping results to boards and cards accessible to the requesting user, potentially exposing attachment metadata to unauthorized users.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-10 16:22 UTC
CWE
- CWE-203 - Observable Discrepancy
Assigner
VulnCheck
CNA
References
3 references
| URL | Tags |
|---|---|
| https://github.com/wekan/wekan/commit/6dfa3beb2b6… | patch |
| https://wekan.fi/ | product |
| https://www.vulncheck.com/advisories/wekan-attach… | third-party-advisory |
Impacted products
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CVE-2026-23937 (GCVE-0-2026-23937)
Vulnerability from cvelistv5 – Published: 2026-08-18 12:20 – Updated: 2026-08-18 13:34
VLAI
EPSS
VEX
Title
Host PSK extraction in Zabbix API
Summary
The Zabbix API host.get action can be exploited by authenticated users to extract a host's PSK key leading to potential loss of data integrity.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 12:50 UTC
CWE
- CWE-203 - Observable Discrepancy
Assigner
Zabbix
CNA
References
1 reference
Impacted products
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CVE-2026-23931 (GCVE-0-2026-23931)
Vulnerability from cvelistv5 – Published: 2026-08-18 12:17 – Updated: 2026-08-18 13:35
VLAI
EPSS
VEX
Title
Frontend plaintext macro value enumeration via the validatate.api.exists action
Summary
The frontend validatate.api.exists action can be exploited by authenticated users to extract plaintext user macro values leading to potential loss of confidentiality.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 12:51 UTC
CWE
- CWE-203 - Observable Discrepancy
Assigner
Zabbix
CNA
References
1 reference
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CVE-2026-23621 (GCVE-0-2026-23621)
Vulnerability from cvelistv5 – Published: 2026-02-19 18:01 – Updated: 2026-05-14 02:09
VLAI
EPSS
VEX
Title
GFI MailEssentials AI < 22.4 ListServer.IsPathExist() Absolute Directory Traversal to File Enumeration
Summary
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Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-20 20:05 UTC
CWE
- CWE-203 - Observable Discrepancy
Assigner
VulnCheck
CNA
References
2 references
| URL | Tags |
|---|---|
| https://gfi.ai/products-and-solutions/network-sec… | release-notespatch |
| https://www.vulncheck.com/advisories/gfi-mailesse… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| GFI Software | MailEssentials AI |
Affected:
0 , < 22.4
(custom)
cpe:2.3:a:gfi:mailessentials:*:*:*:*:*:*:*:* |
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CVE-2026-23620 (GCVE-0-2026-23620)
Vulnerability from cvelistv5 – Published: 2026-02-19 18:00 – Updated: 2026-05-26 11:52
VLAI
EPSS
VEX
Title
GFI MailEssentials AI < 22.4 ListServer.IsDBExist() Absolute Directory Traversal to File Enumeration
Summary
GFI MailEssentials AI versions prior to 22.4 contain an arbitrary file existence enumeration vulnerability in the ListServer.IsDBExist() web method exposed at /MailEssentials/pages/MailSecurity/ListServer.aspx/IsDBExist. An authenticated user can supply an unrestricted filesystem path via the JSON key \"path\", which is URL-decoded and passed to File.Exists(), allowing the attacker to determine whether arbitrary files exist on the server.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-20 20:17 UTC
CWE
- CWE-203 - Observable Discrepancy
Assigner
VulnCheck
CNA
References
2 references
| URL | Tags |
|---|---|
| https://gfi.ai/products-and-solutions/network-sec… | release-notespatch |
| https://www.vulncheck.com/advisories/gfi-mailesse… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| GFI Software | MailEssentials AI |
Affected:
0 , < 22.4
(custom)
cpe:2.3:a:gfi:mailessentials:*:*:*:*:*:*:*:* |
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CVE-2026-21484 (GCVE-0-2026-21484)
Vulnerability from cvelistv5 – Published: 2026-01-03 01:21 – Updated: 2026-01-05 20:36
VLAI
EPSS
VEX
Title
AnythingLLM Vulnerable to Username Enumeration w/ Password Recovery
Summary
AnythingLLM is an application that turns pieces of content into context that any LLM can use as references during chatting. Prior to commit e287fab56089cf8fcea9ba579a3ecdeca0daa313, the password recovery endpoint returns different error messages depending on whether a username exists, so enabling username enumeration. Commit e287fab56089cf8fcea9ba579a3ecdeca0daa313 fixes this issue.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-05 20:32 UTC
Assigner
GitHub_M
CNA
References
2 references
| URL | Tags |
|---|---|
| https://github.com/Mintplex-Labs/anything-llm/sec… | x_refsource_CONFIRM |
| https://github.com/Mintplex-Labs/anything-llm/com… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mintplex-Labs | anything-llm |
Affected:
< e287fab56089cf8fcea9ba579a3ecdeca0daa313
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Mitigation MIT-46
Architecture and Design
Strategy: Separation of Privilege
- Compartmentalize the system to have "safe" areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
- Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.
Mitigation MIT-39
Implementation
- Ensure that error messages only contain minimal details that are useful to the intended audience and no one else. The messages need to strike the balance between being too cryptic (which can confuse users) or being too detailed (which may reveal more than intended). The messages should not reveal the methods that were used to determine the error. Attackers can use detailed information to refine or optimize their original attack, thereby increasing their chances of success.
- If errors must be captured in some detail, record them in log messages, but consider what could occur if the log messages can be viewed by attackers. Highly sensitive information such as passwords should never be saved to log files.
- Avoid inconsistent messaging that might accidentally tip off an attacker about internal state, such as whether a user account exists or not.
CAPEC-189: Black Box Reverse Engineering
An adversary discovers the structure, function, and composition of a type of computer software through black box analysis techniques. 'Black Box' methods involve interacting with the software indirectly, in the absence of direct access to the executable object. Such analysis typically involves interacting with the software at the boundaries of where the software interfaces with a larger execution environment, such as input-output vectors, libraries, or APIs. Black Box Reverse Engineering also refers to gathering physical side effects of a hardware device, such as electromagnetic radiation or sounds.