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Fencer Intel
medium 5.4

CVE-2021-39491 json

A Cross Site Scripting (XSS) vulnerability exists in Yogesh Ojha reNgine v1.0 via the Scan Engine name file in the Scan Engine deletion con…

published 4y ago modified 4mo ago also EUVD-2021-25848

cvss
5.4
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 42%
public exploits
0
none known

Summary

A Cross Site Scripting (XSS) vulnerability exists in Yogesh Ojha reNgine v1.0 via the Scan Engine name file in the Scan Engine deletion confirmation modal box . .

Patch / fix

  • rengine_project rengine 1.0.1

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Exploit prediction

0.49% chance of exploitation in the next 30 days, higher than 42% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/yogeshojha/rengine/issues/460 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
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

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Intel 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.