CVE-2023-24808

Name: CVE-2023-24808
Creator: NVD / NIST
Published: 2023-02-07T01:15:09.567+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.72%

Last modified Jun 17, 2026

CVE-2023-24808 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. PDFio is a C library for reading and writing PDF files. In versions prior to 1.1.0 a denial of service (DOS) vulnerability exists in the pdfio parser. EPSS estimates a 0.72% chance of exploitation in the next 30 days.

Description

PDFio is a C library for reading and writing PDF files. In versions prior to 1.1.0 a denial of service (DOS) vulnerability exists in the pdfio parser. Crafted pdf files can cause the program to run at 100% utilization and never terminate. The pdf which causes this crash found in testing is about 28kb in size and was discovered via fuzzing. Anyone who uses this library either as a standalone binary or as a library can be DOSed when attempting to parse this type of file. Web servers or other automated processes which rely on this code to turn pdf submissions into plaintext can be DOSed when an attacker uploads the pdf. Please see the linked GHSA for an example pdf. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS Probability

0.72%

49.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-835

Affected Software

Vendor	Product	Versions
Pdfio Project	Pdfio	< 1.1.0

References

https://github.com/michaelrsweet/pdfio/commit/4f10021e7ee527c1aa24853e2947e38e154d9ccbPatch, Third Party Advisory
https://github.com/michaelrsweet/pdfio/security/advisories/GHSA-cjc4-x96x-fvgfExploit, Third Party Advisory
https://github.com/michaelrsweet/pdfio/commit/4f10021e7ee527c1aa24853e2947e38e154d9ccbPatch, Third Party Advisory
https://github.com/michaelrsweet/pdfio/security/advisories/GHSA-cjc4-x96x-fvgfExploit, Third Party Advisory

Timeline

Published: Feb 7, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-24808?

How severe is CVE-2023-24808?

CVE-2023-24808 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.72% probability of exploitation in the next 30 days.

How do I fix CVE-2023-24808?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-24808?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST