The Mojolicious module before 7.66 for Perl may leak cookies in certain situations related to multiple similar cookies for the same domain.

published 2024-03-24 2 y ago modified 2026-06-17 4 mo ago also EUVD-2018-13852

cvss: 5.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 46%
public exploits: 0; none known

The Mojolicious module before 7.66 for Perl may leak cookies in certain situations related to multiple similar cookies for the same domain. This affects Mojo::UserAgent::CookieJar.

Patch / fix

fixed in 1 distros 1 links 2

mojolicious mojolicious 7.66

libmojolicious-perl Debian 14, Debian 13, Debian 12 7.71+dfsg-1

debian advisories DEBIAN-CVE-2018-25100

github.com/mojolicious/mojo@c16a56a commit
github.com/mojolicious/mojo#1192 pull request

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-25100 updated 2025-11-21 cvss 3.1

perl-Mojolicious: Mojo::Cookie:: Response does not set domain parameter

Red Hat All currently supported Red Hat products
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 2 y ago (2024-07-18)

Exploit prediction

0.56% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-08).

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:N/I:L/A:N
CNA	3.1	5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected products

mojolicious mojolicious

Classification

Weakness

CWE-400 Uncontrolled Resource Consumption

References

Sources

CVE List CVE-2018-25100
NVD CVE-2018-25100

Fencer Vulns 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.

Summary