What is CVE-2024-56378?

CVE-2024-56378 is a medium-severity vulnerability in Freedesktop Poppler, classified under Out-of-bounds Read. CVSS score: 4.3/10. Published 2024-12-23.

How severe is CVE-2024-56378?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Is CVE-2024-56378 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Out-of-bounds Read in Freedesktop Poppler

CVE-2024-56378

libpoppler.so in Poppler through 24.12.0 has an out-of-bounds read vulnerability within the JBIG2Bitmap::combine function in JBIG2Stream.cc.

Vulnerability class: Buffer Overflow

Published 2024-12-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.006 (47.8th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 47.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: -0.000

Affected products

Freedesktop Poppler

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

Public proof-of-concept exploits

References

gitlab.freedesktop.org/poppler/poppler/-/issues/1553 (Exploit, Issue Tracking)
gitlab.freedesktop.org/poppler/poppler/-/commit/ade9b5ebed44b0c15522c27669ef6cd… (Patch)
gitlab.freedesktop.org/poppler/poppler/-/blob/30eada0d2bceb42c2d2a87361339063e0… (Product)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2024-56378?: CVE-2024-56378 is a medium-severity vulnerability in Freedesktop Poppler, classified under Out-of-bounds Read. CVSS score: 4.3/10. Published 2024-12-23.
How severe is CVE-2024-56378?: Medium severity. CVSS v3 base score is 4.3 out of 10.
Is CVE-2024-56378 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.