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Fencer Vulns
medium 4.8

CVE-2021-27308 json

A cross-site scripting (XSS) vulnerability in the admin login panel in 4images version 1.8 allows remote attackers to inject JavaScript via…

published 2021-03-22 5 y ago modified 2026-09-08 2 mo ago also BIT-rum-2021-27308 , EUVD-2021-14069

cvss
4.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.0%
EPSS 2.0% chance of exploitation in 30 days, percentile 80%
public exploits
1
Exploit-DB

Summary

A cross-site scripting (XSS) vulnerability in the admin login panel in 4images version 1.8 allows remote attackers to inject JavaScript via the "redirect" parameter.

Patch / fix

  • bitnami rum 1.8.1

Timeline

  1. Published
  2. First public exploit (EDB-49945)

Exploit prediction

1.99% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-49945 4Images 1.8 - 'redirect' Reflected XSS webapps, 2021-06-03
  • github.com https://github.com/4images/4images/issues/3 referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/162946/4Images-1.8-Cross-Site-Scripting.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 4.8 CVSS:3.1/AV:N/AC:L/PR:H/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
OSV 3.1 4.8 CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
bitnami rum
>=1.8.0, <1.8.1
1.8.1

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.