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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

Low3.5EPSS 0.19%
Published
Updated
Reserved
Assigned by
GitHub_M

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.

Scores

CVSS scores of CVE-2026-23738, by who scored it
Scored byCVSSScoreVector
GitHub_MCNA (assigner)3.1Low3.5CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
NVDNVD · Analyzed3.1Medium6.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS (exploitation in 30 days)
0.19% · top 91% of all CVEs (6 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 3.5.

Weakness

Affected products

  • asterisk · asterisk

    • affected < 23.2.2
    • affected < 22.8.2
    • affected < 21.12.1
    • affected < 20.18.2
    • affected < 20.7-cert9

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .