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Fencer Vulns
medium 6.9

CVE-2024-48908 json

lychee-action vulnerable to arbitrary code injection in composite action

published 2025-08-28 14 mo ago modified 2026-09-26 43 d ago also EUVD-2024-54925 , GHSA-65rg-554r-9j5x

cvss
6.9
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 30%
public exploits
0
none known

Summary

lychee link checking action checks links in Markdown, HTML, and text files using lychee. Prior to version 2.0.2, there is a potential attack of arbitrary code injection vulnerability in lychee-setup of the composite action at action.yml. This issue has been patched in version 2.0.2.

Patch / fix

  • github-actions lycheeverse/lychee-action 2.0.2

CISA SSVC

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

Exploit prediction

0.37% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 6.9 CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U
CNA 4.0 6.9 CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected packages

ecosystem package affected fixed in
github-actions lycheeverse/lychee-action
<2.0.2
2.0.2

Affected products

  • lycheeverse lychee-action

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.