Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-23738— The Asterisk embedded web server 's /httpstatus page echos user supplied values(cookie and query string) without sanitization

Quick assessment

Affected
asterisk asterisk
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Asterisk是Asterisk开源的一款PBX系统的软件，运行在Linux系统上，支持使用SIP、IAX、H323协议进行IP通话。 Asterisk 20.7-cert9之前版本、20.18.2之前版本、21.12.1之前版本、22.8.2之前版本和23.2.2之前版本存在跨站脚本漏洞，该漏洞源于对Cookie和GET变量查询参数的处理不当，可能导致跨站脚本攻击。

CVSS 3.5 · Low EPSS 0.19% · P8
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-23738

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
The Asterisk embedded web server 's /httpstatus page echos user supplied values(cookie and query string) without sanitization
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Asterisk 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Asterisk是Asterisk开源的一款PBX系统的软件，运行在Linux系统上，支持使用SIP、IAX、H323协议进行IP通话。 Asterisk 20.7-cert9之前版本、20.18.2之前版本、21.12.1之前版本、22.8.2之前版本和23.2.2之前版本存在跨站脚本漏洞，该漏洞源于对Cookie和GET变量查询参数的处理不当，可能导致跨站脚本攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
asterisk asterisk < 23.2.2 -

II. Public POCs for CVE-2026-23738

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-23738

请登录查看更多情报信息。

Same Patch Batch · asterisk · 2026-02-06 · 4 CVEs total

CVE-2026-23739 2.0 LOW Asterisk xml.c uses unsafe XML_PARSE_NOENT leading to potential XXE Injection
CVE-2026-23740 Asterisk vulnerable to potential privilege escalation
CVE-2026-23741 ast_coredumper running as root sources ast_debug_tools.conf from /etc/asterisk; potentiall

IV. Related Vulnerabilities

Same product: asterisk
Same vendor: asterisk
Same weakness: CWE-79

V. Comments for CVE-2026-23738

No comments yet

Leave a comment