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Fencer Vulns
critical 9.0

CVE-2022-0945 json

Stored XSS viva axd and cshtml file upload in star7th/showdoc in star7th/showdoc

published 2022-03-15 4 y ago modified 2026-06-17 4 mo ago also GHSA-vpwq-6cp4-ffqc , EUVD-2022-1549

cvss
9.0
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 57%
public exploits
0
none known

Summary

Stored XSS viva axd and cshtml file upload in star7th/showdoc in GitHub repository star7th/showdoc prior to v2.10.4.

Patch / fix

  • packagist showdoc/showdoc 2.10.4
  • star7th star7th/showdoc v2.10.4

Exploit prediction

0.81% chance of exploitation in the next 30 days, higher than 57% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • huntr.dev https://huntr.dev/bounties/8702e2bf-4af2-4391-b651-c8c89e7d089e referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.0 9.0 CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
NVD 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 3.5 AV:N/AC:M/Au:S/C:N/I:P/A:N
GitHub 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
packagist showdoc/showdoc
<2.10.4
2.10.4

Affected products

  • star7th star7th/showdoc

Classification

Weakness
  • CWE-434 Unrestricted Upload of File with Dangerous Type
  • 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.