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Fencer Intel
medium 5.3

CVE-2026-118987 json

CallBackery versions before 0.62.0 for Perl accept session cookies of any age sent in the X-Session-Cookie header

published 10d ago modified 3d ago also EUVD-2026-113921

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 16%
public exploits
0
none known

Summary

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.

Patch / fix

  • cpan CallBackery 0.62.0

Is CVE-2026-118987 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
3d ago

Exploit prediction

0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CISA ADP 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected products

  • cpan CallBackery

Classification

Weakness
  • CWE-1463 Insufficient Session Timeout Value

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.