Stack overflow in Xpdf 4.04 due to object loop in PDF page label tree
Priority MEDIUM 40CWE-674Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-674.
Summary
In Xpdf 4.04 (and earlier), a PDF object loop in the page label tree leads to infinite recursion and a stack overflow.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00481 41st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Xpdf | Xpdf | 4.04 | — | No fix listed | CNA |
- Xpdf VendorXpdf Affected 4.04 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:xpdfreader:xpdf:*:*:*:*:*:*:*:* | up to 4.04 | Vulnerable | Xpdfreader |
- cpe:2.3:a:xpdfreader:xpdf:*:*:*:*:*:*:*:* Versions up to 4.04 Vulnerable ·Xpdfreader
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2023-2663
- 2026-10-03 Alias added: GHSA-8wrw-hcvf-r5f8
References
More Xpdf vulnerabilities
- TI-2003-00409 Various PDF viewers including (1) Adobe Acrobat 5.06 and (2) Xpdf 1.01 allow remote… CVSS 2.0HIGH 7.5
- TI-2024-03046 Stack overflow in Xpdf 4.05 due to object loop in attachments CVSS 3.1MEDIUM 5.5
- TI-2024-03045 Stack overflow in Xpdf 4.05 due to object loop in PDF object stream CVSS 3.1MEDIUM 5.5
- TI-2023-02492 Stack overflow in Xpdf 4.04 due to object loop in PDF embedded file tree CVSS 3.1MEDIUM 5.5
- TI-2004-00806 Multiple integer overflows in xpdf 2.0 and 3.0, and other packages that use xpdf code… CVSS 2.0HIGH 10.0
- TI-2004-00807 Multiple integer overflows in xpdf 3.0, and other packages that use xpdf code such as… CVSS 2.0HIGH 10.0
Sources
- CVE-2023-2663 · CVE Program
- CVE-2023-2663 · NVD
- FIRST EPSS
- GHSA-8wrw-hcvf-r5f8 · GitHub Advisory Database · CC BY 4.0
- CVE-2023-2663 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences