What’s Vulnerable › Vulnerabilities

CVE-2023-2663: Stack overflow in Xpdf 4.04 due to object loop in PDF page label tree

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-05-11 · updated 2026-06-17
• Weakness: CWE-674

Description

In Xpdf 4.04 (and earlier), a PDF object loop in the page label tree leads to infinite recursion and a stack overflow.

Affected products

• Xpdf: through 4.04

References

• https://forum.xpdfreader.com/viewtopic.php?t=42421
• https://forum.xpdfreader.com/viewtopic.php?t=42421

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