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Fencer Vulns
medium 6.1

CVE-2023-26146 json

All versions of the package ithewei/libhv are vulnerable to Cross-site Scripting (XSS) such that when a file with a name containing a malic…

published 2023-09-29 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-29981

cvss
6.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 38%
public exploits
0
none known

Summary

All versions of the package ithewei/libhv are vulnerable to Cross-site Scripting (XSS) such that when a file with a name containing a malicious payload is served by the application, the filename is displayed without proper sanitization when it is rendered.

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.44% chance of exploitation in the next 30 days, higher than 38% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • security.snyk.io https://security.snyk.io/vuln/SNYK-UNMANAGED-ITHEWEILIBHV-5730766 referenced PoC, tagged "exploit" by a source, unverified
  • gist.github.com https://gist.github.com/dellalibera/c53448135480cbe12257c4b413a90d20 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/E:P
CNA 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

  • n/a ithewei/libhv
  • ithewei\/libhv ithewei\/libhv

Classification

Weakness
  • 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.