CVE-2026-57196 (GCVE-0-2026-57196)
Vulnerability from cvelistv5
Published
2026-10-26 19:27
Modified
2026-10-26 20:13
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Summary
Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, an unauthenticated attacker may use reflected cross-site scripting in `phone provisioning HTTP error pages` to retrieve an authorized user's `AMI session cookie` and impersonate that user when `res_phoneprov` is enabled. The Asterisk HTTP web server, Asterisk Manager Interface (AMI), and AMI access via HTTP must all be enabled; each is disabled by default. The attacker must be able to connect to the HTTP server, which binds only to `127.0.0.1` by default even when enabled, and must convince the authorized user to click a malicious link. This issue is fixed in Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3.
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| asterisk | asterisk |
Version: < 20.20.1 Version: >= 21.0.0-pre1, < 21.12.3 Version: >= 22.0.0-pre1, < 22.10.1 Version: >= 23.0.0-pre1, < 23.4.1 |
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{
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"id": "CVE-2026-57196",
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}
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"version": "4.0",
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"tags": [
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"tags": [
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"url": "https://github.com/asterisk/asterisk/commit/e6998409f73f49959d0062c695bb9a2f611af5ac"
},
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"name": "https://github.com/asterisk/asterisk/releases/tag/20.20.1",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/asterisk/asterisk/releases/tag/20.20.1"
},
{
"name": "https://github.com/asterisk/asterisk/releases/tag/21.12.3",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/asterisk/asterisk/releases/tag/21.12.3"
},
{
"name": "https://github.com/asterisk/asterisk/releases/tag/22.10.1",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/asterisk/asterisk/releases/tag/22.10.1"
},
{
"name": "https://github.com/asterisk/asterisk/releases/tag/23.4.1",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/asterisk/asterisk/releases/tag/23.4.1"
},
{
"name": "https://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11"
},
{
"name": "https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3"
},
{
"name": "https://github.com/asterisk/asterisk/tree/24.0.0-pre1",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/asterisk/asterisk/tree/24.0.0-pre1"
}
],
"source": {
"advisory": "GHSA-4pgv-j3mr-3rcp",
"discovery": "UNKNOWN"
},
"title": "Asterisk: Reflected XSS in Phone Provisioning HTTP Error Pages"
}
},
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"datePublished": "2026-10-26T19:27:35.360Z",
"dateReserved": "2026-06-24T02:00:46.800Z",
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"state": "PUBLISHED"
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"vulnerability-lookup:meta": {
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Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, an unauthenticated attacker may use reflected cross-site scripting in `phone provisioning HTTP error pages` to retrieve an authorized user\u0027s `AMI session cookie` and impersonate that user when `res_phoneprov` is enabled. The Asterisk HTTP web server, Asterisk Manager Interface (AMI), and AMI access via HTTP must all be enabled; each is disabled by default. The attacker must be able to connect to the HTTP server, which binds only to `127.0.0.1` by default even when enabled, and must convince the authorized user to click a malicious link. 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"dataType": "CVE_RECORD",
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}
}
}
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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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