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Fencer Vulns
critical 9.8

CVE-2023-25344 json

An issue was discovered in swig-templates thru 2.0.4 and swig thru 1.4.2, allows attackers to execute arbitrary code via crafted Object.pro…

published 2023-03-15 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-29303

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 63%
public exploits
0
none known

Summary

An issue was discovered in swig-templates thru 2.0.4 and swig thru 1.4.2, allows attackers to execute arbitrary code via crafted Object.prototype anonymous function.

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
total
Assessed
20 mo ago

Exploit prediction

1.03% chance of exploitation in the next 30 days, higher than 63% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/node-swig/swig-templates/issues/89 referenced PoC, tagged "exploit" by a source, unverified
  • gem-love.com https://www.gem-love.com/2023/02/01/Swig%E6%A8%A1%E6%9D%BF%E5%BC%95%E6%93%8E0day%E6%8C%96%E6%8E%98-%E4%BB%A3%E7%A0%81%E6%89%A7%E8%A1%8C%E5%92%8C%E6%96%87%E4%BB%B6%E8%AF%BB%E5%8F%96/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Classification

Weakness
  • CWE-94 Improper Control of Generation of Code

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.