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Fencer Vulns
medium 6.1

CVE-2025-53626 json

pdfme has Sandbox Escape and Prototype Pollution vulnerabilities in pdfme expression evaluation

published 2025-07-10 15 mo ago modified 2026-09-10 1 mo ago also GHSA-54xv-94qv-2gfg , EUVD-2025-21039

cvss
6.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 26%
public exploits
0
none known

Summary

pdfme is a TypeScript-based PDF generator and React-based UI. The expression evaluation feature in pdfme 5.2.0 to 5.4.0 contains critical vulnerabilities allowing sandbox escape leading to XSS and prototype pollution attacks. This vulnerability is fixed in 5.4.1.

Patch / fix

  • npm @pdfme/common 5.4.1

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
15 mo ago

Exploit prediction

0.33% chance of exploitation in the next 30 days, higher than 26% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/pdfme/pdfme/security/advisories/GHSA-54xv-94qv-2gfg referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
GitHub 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
npm @pdfme/common
>=5.2.0, <5.4.1
5.4.1

Affected products

  • pdfme pdfme

Classification

Weakness
  • CWE-94 Improper Control of Generation of Code
  • CWE-1321 Improperly Controlled Modification of Object Prototype Attributes
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.