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Fencer Vulns
medium 6.1

CVE-2020-26934 json

phpMyAdmin Cross-site Scripting (XSS)

published 2020-10-10 6 y ago modified 2026-09-08 2 mo ago also BIT-phpmyadmin-2020-26934 , EUVD-2022-2695 , GHSA-6349-53vr-7hcr

cvss
6.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.9%
EPSS 1.9% chance of exploitation in 30 days, percentile 79%
public exploits
0
none known

Summary

phpMyAdmin before 4.9.6 and 5.x before 5.0.3 allows XSS through the transformation feature via a crafted link.

Patch / fix

  • packagist phpmyadmin/phpmyadmin 4.9.6, 5.0.3
  • bitnami phpmyadmin 4.9.6, 5.0.3
  • phpmyadmin phpmyadmin 4.9.6, 5.0.3
  • phpmyadmin Debian 14, Debian 13, Debian 12 4:4.9.7+dfsg1-1

debian advisories DEBIAN-CVE-2020-26934

  • phpmyadmin Ubuntu 18.04 LTS 4:4.6.6-5ubuntu0.5
  • phpmyadmin Ubuntu Pro 20.04 LTS 4:4.9.5+dfsg1-2ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2020-26934

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • phpMyAdmin openSUSE Tumbleweed 5.1.1-1.2
  • phpMyAdmin Package Hub 15 SP1, Package Hub 15, Package Hub 12 +1 more 4.9.7-bp151.3.24.1
  • phpMyAdmin Package Hub 15 SP2, Package Hub 15 SP1, Package Hub 12 +2 more 4.9.6-bp152.2.3.1

opensuse advisories openSUSE-SU-2024:11171-1openSUSE-SU-2020:1806-1openSUSE-SU-2020:1675-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-26934 updated cvss 6.8

phpmyadmin: XSS relating to the transformation feature

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.90% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
GitHub 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
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N
OSV 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
packagist phpmyadmin/phpmyadmin
>=4.9.0, <4.9.6
>=5.0.0, <5.0.3
4.9.6
5.0.3
bitnami phpmyadmin
>=4.9.0, <4.9.6
>=5.0.0, <5.0.3
4.9.6
5.0.3

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.