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Fencer Vulns
critical 9.1

CVE-2023-43661 in the critical feed json

Cachet vulnerable to Authenticated Remote Code Execution

published 2023-10-11 3 y ago modified 2026-10-20 19 d ago also GHSA-hv79-p62r-wg3p , EUVD-2023-2753

cvss
9.1
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
49.2%
EPSS 49.2% chance of exploitation in 30 days, percentile 98%
public exploits
0
none known

Summary

Cachet is an open-source status page system. Prior to the 2.4 branch, a template functionality which allows users to create templates allows them to execute any code on the server during the bad filtration and old twig version. Commit 6fb043e109d2a262ce3974e863c54e9e5f5e0587 of the 2.4 branch contains a patch for this issue.

Patch / fix

  • packagist cachethq/cachet 2.4
  • cachethq cachet 2.4

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

49.23% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/cachethq/cachet/security/advisories/GHSA-hv79-p62r-wg3p referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.0 9.1 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
GitHub 3.0 9.1 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L

Affected packages

ecosystem package affected fixed in
packagist cachethq/cachet
<2.4
2.4

Affected products

  • cachethq cachet

Classification

Weakness
  • CWE-94 Improper Control of Generation of Code
  • CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component

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.