BabelDOC from 0.3.61 before 0.7.0 contains a resource exhaustion vulnerability that allows remote attackers to exhaust
Source GCVE Database
Not known to be exploited · CVSS 8.7 High : upgrade to 0.7.0 soon.
Data as of 8 Nov 2026, 17:50 UTC
Thin evidence
One scorer or none| CNA (VulnCheck) | CVSS 4.0 | 8.7 |
|---|---|---|
| CNA (VulnCheck) | CVSS 3.1 | 7.5 |
- Patch
- Available – fixed in 0.7.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 8 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 8 Nov 2026.
What to do
Upgrade BabelDOC to 0.7.0.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| funstory-aiBabelDOC | Affected
| Fixed in
|
PyPIBabelDOCpkg:pypi/BabelDOCOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
If you cannot patch yet, consider restricting or scanning PDF inputs to detect unusually large ToUnicode CMap ranges to mitigate potential exploitation.
Description
BabelDOC versions from 0.3.61 up to but not including 0.7.0 contain a resource exhaustion vulnerability. This flaw allows remote attackers to exhaust CPU and memory resources by submitting a crafted PDF with an embedded ToUnicode CMap that declares an excessively large range. The vulnerability causes billions of loop iterations in the translation worker, leading to a denial of service condition.
References
- github.com/funstory-ai/BabelDOC/security/advisories/GHSA-wrv8-h9rp-6fqq (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2026-124553 (opens in a new tab)
- github.com/funstory-ai/BabelDOC/commit/39a6e9eafeecd39404b94b2f71e88ea058753dd5 (opens in a new tab)
- github.com/funstory-ai/BabelDOC/blob/main/docs/release-notes/v0.7.0.md (opens in a new tab)
- github.com/funstory-ai/BabelDOC/blob/v0.6.4/babeldoc/format/pdf/new_parser/runtime/to_unicode_parser_runtime.py (opens in a new tab)
- github.com/funstory-ai/BabelDOC/blob/v0.6.4/babeldoc/pdfminer/cmapdb.py (opens in a new tab)
- vulncheck.com/advisories/babeldoc-from-0.3.61-before-0.7.0-denial-of-service-via-tounicode-cmap-parsing (opens in a new tab)