CVE-2026-118987

Medium

Description

CallBackery versions before 0.62.0 for Perl accept session cookies of any age sent in the X-Session-Cookie header. cookieConf() rejects a cookie older than 300 seconds only when it arrives in the xsc query parameter. The same cookie sent in the X-Session-Cookie header is accepted however old it is. A session cookie that leaks through a log, a Referer header or browser history authenticates as its user indefinitely.

SeverityMedium

CVSS5.3

Exploit probability—

ProductCallbackery

PublishedOct 30, 2026

First seenNov 4, 2026

Weakness typeCWE-1463CWE-1463

How to fix

Update

CallBackery0.62.0 or later

Vendor advisories

metacpan.org/release/OETIKER/CallBackery-0.62.0/changes

Affected products

Product	Affected versions	Fixed in
CallBackery	v < 0.62.0	0.62.0

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