CVE-2026-7836 (GCVE-0-2026-7836)
Vulnerability from cvelistv5
Published
2026-05-21 07:35
Modified
2026-05-21 12:12
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-682 - Incorrect Calculation
Summary
An incorrect calculation in the hextoint macro in Netatalk 2.0.0 through 4.4.2 due to improper uppercase character handling allows a remote authenticated attacker to cause limited data modification via crafted hexadecimal input.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
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{
"containers": {
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"metrics": [
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"other": {
"content": {
"id": "CVE-2026-7836",
"options": [
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"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-21T12:12:27.745784Z",
"version": "2.0.3"
},
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"providerMetadata": {
"dateUpdated": "2026-05-21T12:12:38.186Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
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],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Netatalk",
"vendor": "Netatalk",
"versions": [
{
"lessThanOrEqual": "4.4.2",
"status": "affected",
"version": "2.0.0",
"versionType": "semver"
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{
"status": "unaffected",
"version": "4.5.0",
"versionType": "semver"
}
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}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Arjun Basnet from Securin"
}
],
"datePublic": "2026-05-13T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "An incorrect calculation in the hextoint macro in Netatalk 2.0.0 through 4.4.2 due to improper uppercase character handling allows a remote authenticated attacker to cause limited data modification via crafted hexadecimal input."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 3.1,
"baseSeverity": "LOW",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N",
"version": "3.1"
}
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],
"problemTypes": [
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"descriptions": [
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"description": "Incorrect Calculation",
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"type": "CWE"
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"providerMetadata": {
"dateUpdated": "2026-05-21T07:53:03.045Z",
"orgId": "33c584b5-0579-4c06-b2a0-8d8329fcab9c",
"shortName": "securin"
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"references": [
{
"name": "Netatalk Security Advisory CVE-2026-7836",
"tags": [
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"url": "https://netatalk.io/security/CVE-2026-7836"
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"title": "hextoint macro uppercase bug"
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"cveMetadata": {
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"datePublished": "2026-05-21T07:35:13.096Z",
"dateReserved": "2026-05-05T07:25:35.245Z",
"dateUpdated": "2026-05-21T12:12:38.186Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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