CVE-2018-25160

Name: CVE-2018-25160
Creator: NVD / NIST
Published: 2026-02-27T21:16:03.59+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.40%

Last modified Jun 17, 2026

CVE-2018-25160 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. HTTP::Session2 versions through 1.09 for Perl does not validate the format of user provided session ids, enabling code injection or other impact depending on session backend. For example, if an application uses memcached for session storage, then it may be possible for a remote attacker to inject memcached commands in the session id value.. EPSS estimates a 0.40% chance of exploitation in the next 30 days.

Description

HTTP::Session2 versions through 1.09 for Perl does not validate the format of user provided session ids, enabling code injection or other impact depending on session backend. For example, if an application uses memcached for session storage, then it may be possible for a remote attacker to inject memcached commands in the session id value.

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

EPSS Probability

0.40%

32.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions	Update
Tokuhirom	Http\	<= 1.09	Session2

References

https://github.com/tokuhirom/HTTP-Session2/commit/813838f6d08034b6a265a70e53b59b941b5d3e6d.patchPatch
https://metacpan.org/pod/Cache::Memcached::Fast::SafeThird Party Advisory
https://metacpan.org/release/TOKUHIROM/HTTP-Session2-1.10/source/ChangesProduct, Release Notes
http://www.openwall.com/lists/oss-security/2026/02/27/13Mailing List, Third Party Advisory

Timeline

Published: Feb 27, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2018-25160?

How severe is CVE-2018-25160?

CVE-2018-25160 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.40% probability of exploitation in the next 30 days.

How do I fix CVE-2018-25160?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-25160?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST