PT-2025-35161 · Unknown+1 · Cgi-Simple+1

Maxim Kosenko · Published 2025-08-29 · Updated 2025-10-11 · CVE-2025-40927

Positive Technologies (AI Summary)

CVSS v3.1

7.3

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Name of the Vulnerable Software and Affected Versions CGI::Simple versions prior to 1.282

Description CGI::Simple contains a HTTP response splitting flaw that allows HTTP response header injection. This can be exploited to perform reflected cross-site scripting (XSS), open redirect, cache poisoning, or header manipulation attacks. An attacker can inject a newline character (e.g., %0A) into a query string parameter to break the HTTP header and inject new headers or an entire body, potentially delivering a script payload reflected in the server’s response. The validation mechanisms in place can be bypassed using URL-encoded values.

Recommendations Update CGI::Simple to version 1.282 or later.

Fix

Weakness Enumeration

CWE-113

Related Identifiers

CVE-2025-40927

OPENSUSE-SU-2025:15625-1

Affected Products

Cgi-Simple

Debian

References · 24

• https://osv.dev/vulnerability/DEBIAN-CVE-2025-40927 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-40927 · Security Note
• https://ubuntu.com/security/CVE-2025-40927 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-40927 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-40927 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-40927 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2025:15625-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2025-40927 · Vendor Advisory
• https://github.com/manwar/CGI--Simple/commit/0c1a2e0b8f24804d33daac686666ac944363a630 · Note
• https://owasp.org/www-community/attacks/HTTP_Response_Splitting · Note
• https://suse.com/security/cve/CVE-2025-40927 · Note
• https://t.me/cveNotify/133884 · Telegram Post
• https://reddit.com/r/debian/comments/1n79g7f/debian_131_and_1212_20250906 · Reddit Post
• https://twitter.com/cracbot/status/1963195310370435372 · Twitter Post
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-2320 · Note