jpegoptim v1.5.2 was discovered to contain a heap overflow in the optimize function at jpegoptim.c.

published 2023-03-15 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-31517

cvss: 7.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 33%
public exploits: 0; none known

Patch / fix

links 1

github.com/tjko/jpegoptim/issues/132 advisory

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-2023-27781 updated 2025-11-21

jpegoptim: Heap overflow in the optimize function at jpegoptim.c.

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: Proof of concept is public
Automatable: no
Technical impact: total
Assessed: 20 mo ago (2025-02-27)

Exploit prediction

0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/tjko/jpegoptim/issues/132 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Classification

Weakness

CWE-787 Out-of-bounds Write

References

github.com /tjko/jpegoptim/issues/132
exploit, issue-tracking, patch, third-party-advisory
lists.fedoraproject.org /archives/list/package-announce%40lists.fedoraproject.org/message/66ZW65INCWSQYIT5E6N6I6PE5D7R6EK7/
vendor-advisory

Sources

CVE List CVE-2023-27781
NVD CVE-2023-27781

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