CVE-2026-54071: funstory-ai BabelDOC · Deserialization of Untrusted Data
Affects funstory-ai BabelDOCSource CVE Database V5
Not known to be exploited · CVSS 7.8 High : upgrade to 0.6.3 soon.
Data as of 26 Oct 2026, 12:55 UTC
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 31% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- CISA SSVC
- Exploitation
- No evidence of active exploitation and no public proof of concept
- Automatable
- Attackers cannot reliably automate steps 1–4 of the kill chain
- Technical impact
- Total control over the software or total information disclosure
CISA SSVC assessment, 2026-08-21.
- Patch
- Available – fixed in 0.6.3
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 21 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 Oct 2026.
What to do
Upgrade funstory-ai BabelDOC to 0.6.3.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| funstory-aiBabelDOC | Affected
| Fixed in
|
Description
BabelDOC is a document translation tool. Prior to 0.6.3, BabelDOC's vendored PDF parser in babeldoc/pdfminer/cmapdb.py deserializes untrusted pickle data when CMapDB._load_data() loads CMap files. PDF-controlled Encoding or CMapName values and embedded PostScript usecmap operators can reach this sink after path separators are decoded, while _normalize_cmap_name() removes only a leading slash. Absolute paths or traversal sequences can escape the trusted CMap directories through os.path.join(), select an attacker-writable .pickle.gz file, and cause pickle.loads() to execute arbitrary Python code with the privileges of the BabelDOC process. This issue is fixed in version 0.6.3.
References
- github.com/funstory-ai/BabelDOC/security/advisories/GHSA-m8gf-v64p-gfmg (opens in a new tab)
- github.com/funstory-ai/BabelDOC/commit/28f784ca6b437dbba040bfd9c67110373cd0924b (opens in a new tab)
- github.com/funstory-ai/BabelDOC/blob/main/docs/release-notes/v0.6.3.md (opens in a new tab)
- github.com/funstory-ai/BabelDOC/releases/tag/v0.6.3 (opens in a new tab)