CVE-2026-13575

What it is

HTTP::Session versions before 0.54 for Perl allow memcached command injection via unfiltered session ids in HTTP::Session::Store::CHI. The session id from the client's cookie reaches the CHI cache unchanged. The sibling HTTP::Session::Store::Memcached rejects ids that contain control characters, but the CHI store has no such check, and CHI does not escape keys for its memcached drivers. With a memcached driver, a CR and LF in the session id end the cache command early, and the server reads the bytes after them as further commands.

At a glance

Exploitability

Can be exploited over the network without logging in. Limited direct impact.

Exploit odds

0.9% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2026-06-28 20:29 UTC ReservedThe CVE id was reserved by its CNA
2. 2026-11-01 11:18 UTC PublishedDisclosed publicly on CVE.org and NVD
3. 2026-11-09 17:17 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.9% in the next 30 days (EPSS).
• Severity: 5.6 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2026-11-01 11:18 UTC

Last modified

2026-11-09 17:17 UTC

Exploit probability

0.9% · EPSS, next 30 days

Weakness

CWE-93

Record status

Deferred

Attack profile CVSS 3.1 · 5.6

Attack vector

Network

Complexity

High

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2026-13575.md and follow it. Check whether this project is affected by CVE-2026-13575. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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