# CVE-2026-116671: Infinite loop in Xpdf due to missing validation in JPEG 2000 decoder

Status: published. Published: 2026-10-26. Updated: 2026-11-02.

Infinite loop in Xpdf 4.06 and earlier, due to incorrect validation of progression order field in JPEG 2000 image.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Xpdf / Xpdf: ≥ 0; ≤ 4.06 (affected, Version). Source: CNA: GandC; platforms: all

## Severity and prioritization

- CVSS 4.0: 2.1 (low); CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N; source: CNA: GandC

- CVSS 4.0: 2.1 (low); CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X; source: NVD: xpdf@xpdfreader.com

- CISA KEV: No listing in collected sources

- EPSS: 0.11% as of 2026-11-02; percentile 1.28%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-20, CWE-835

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://www.xpdfreader.com/security-bug/CVE-2026-116671.html (CNA: GandC)

- https://www.xpdfreader.com/security-bug/CVE-2026-116671.html (xpdf@xpdfreader.com)

## Provenance

- CNA: GandC: https://www.cve.org/CVERecord?id=CVE-2026-116671; retrieved 2026-11-02; source updated 2026-11-02

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-116671; retrieved 2026-11-03; source updated 2026-11-02

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-116671; retrieved 2026-11-02; source updated Not reported

Revision: 0a197b1632bff676d15a8828b52c5988f9d25311c9d7457d460e06a472c3fb08

Canonical: https://y2.dev/cve/CVE-2026-116671

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