Resource exhaustion in Funstory-Ai Babeldoc
CVE-2026-124553
BabelDOC from 0.3.61 before 0.7.0 contains a resource exhaustion vulnerability that allows remote attackers to exhaust CPU and memory by supplying unbounded bfrange and cidrange spans. Attackers can submit a crafted PDF whose embedded ToUnicode CMap declares a huge range, driving billions of loop iterations and stalling the translation worker.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/funstory-ai/BabelDOC/blob/main/docs/release-notes/v0.7.0.md (release-notes)
- github.com/funstory-ai/BabelDOC/blob/v0.6.4/babeldoc/format/pdf/new_parser/runt… (technical-description)
- github.com/funstory-ai/BabelDOC/blob/v0.6.4/babeldoc/pdfminer/cmapdb.py (technical-description)
- github.com/funstory-ai/BabelDOC/commit/39a6e9eafeecd39404b94b2f71e88ea058753dd5 (patch)
- GitHub Security Advisory (GHSA-wrv8-h9rp-6fqq) (vendor-advisory)
- VulnCheck Advisory: BabelDOC from 0.3.61 before 0.7.0 Denial of Service via ToUnicode CMap Parsing (third-party-advisory)
Frequently asked questions
- What is CVE-2026-124553?
- CVE-2026-124553 is a high-severity vulnerability in Funstory-Ai Babeldoc, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-11-08.
- How severe is CVE-2026-124553?
- High severity. CVSS v3 base score is 7.5 out of 10.