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CVE-2026-23738

The Asterisk embedded web server 's /httpstatus page echos user supplied values(cookie and query string) without sanitization

Published: Feb 6, 2026Updated: Feb 18, 2026 Sources: CVE List NVDCWE-79
NVD MITRE
3.5CVSSLOW
EPSS Score
0.2%
Top 94.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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 Vector Breakdown

AV:AAC:LPR:NUI:RS:UC:LI:NA:N
Exploitability
AV:AAttack Vector
Adjacent
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-79

Affected Products

asteriskasterisk
On-premWeb App
Communications / voip-telephony
asterisksangoma
On-prem
Communications
certified asterisksangoma
On-prem
Communications / voip-telephony
asteriskoss-projectCommunicationsaka open source, asterisk appliance developer kit
sangomacommercialCACommunicationsaka freepbx, certified asterisk, asterisk

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Execution
Initial Access
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References

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

Timeline

Published
Feb 6, 2026
Last Updated
Feb 18, 2026

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