CVE-2026-23738

MEDIUM EPSS 5.6%
Published Feb 6, 20264mo ago · Modified Jun 17, 20261w ago
6.1 CVSS 3.1
Medium
Find Similar
Published Feb 6, 2026 4mo ago
Last Modified Jun 17, 2026 1w ago

Description

Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2, user supplied/control values for Cookies and any GET variable query Parameter are directly interpolated into the HTML of the page using ast_str_append. The endpoint at GET /httpstatus is the potential vulnerable endpoint relating to asterisk/main /http.c. This issue has been patched in versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2.

CVSS Details

Base Score
6.1
Exploitability
2.8
Impact
2.7
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Changed
Confidentiality Low
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
5.6% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-79 Cross-site Scripting Injection

Affected Products 15

VendorProductVersionRange
sangomaasterisk* ≤20.18.2
sangomaasterisk*≥21.0.0  –  ≤21.12.1
sangomaasterisk*≥22.0.0  –  ≤22.8.2
sangomaasterisk*≥23.0.0  –  <23.2.2
sangomacertified_asterisk* ≤18.9
sangomacertified_asterisk20.7any
sangomacertified_asterisk20.7any
sangomacertified_asterisk20.7any
sangomacertified_asterisk20.7any
sangomacertified_asterisk20.7any
sangomacertified_asterisk20.7any
sangomacertified_asterisk20.7any
sangomacertified_asterisk20.7any
sangomacertified_asterisk20.7any
sangomacertified_asterisk20.7any

References 1

  • github.com https://github.com/asterisk/asterisk/security/advisories/GHSA-v6hp-wh3r-cwxh
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.