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Fencer Vulns
medium 6.5

CVE-2026-58191 json

Appium: Reflected XSS / arbitrary JS in @appium/base-driver /test/guinea-pig* routes

published 2026-07-08 4 mo ago modified 2026-09-01 2 mo ago also GHSA-3wgp-x9p5-c7cc , EUVD-2026-42425

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 47%
public exploits
0
none known, plus a Nuclei check

Summary

Appium is a cross-platform automation framework for all kinds of apps, built on top of the W3C WebDriver protocol. Prior to 10.7.0, Appium's base-driver unconditionally mounts the /test/guinea-pig, /test/guinea-pig-scrollable, and /test/guinea-pig-app-banner routes, and compileLodashTemplate reflects the throwError query parameter, comments POST field, and User-Agent request header into HTML without escaping, allowing reflected cross-site scripting and arbitrary JavaScript execution on the server origin. This issue is fixed in version 10.7.0.

Patch / fix

  • npm @appium/base-driver 10.7.0
  • appium appium/base-driver 10.7.0

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
4 mo ago

Exploit prediction

0.56% chance of exploitation in the next 30 days, higher than 47% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Nuclei template Appium base-driver <=10.6.0 - Reflected Cross-Site Scripting nuclei detection template
  • github.com https://github.com/appium/appium/security/advisories/GHSA-3wgp-x9p5-c7cc referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/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
GitHub 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Affected packages

ecosystem package affected fixed in
npm @appium/base-driver
<10.7.0
10.7.0

Affected products

  • appium appium

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation
  • CWE-489 Active Debug 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.