CVE-2020-26934

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

Published: 2020-10-10 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-26934 is rated Moderate Risk (51.7/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.16%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2020-26934

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 2.79% 2.16% -0.62%
2 2025-12-28 1.81% 2.79% +0.98%
3 2025-12-27 — 1.81% —

Full EPSS history (25 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-26934

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.1 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 2.7 [email protected]
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2020-26934

GitHub Security Advisory for CVE-2020-26934

GHSA-6349-53vr-7hcr · Severity: medium · Ecosystem: composer — phpMyAdmin Cross-site Scripting (XSS)

OS Trackers for CVE-2020-26934

vendor priority summary link
alpine medium CVE-2020-26934: 1 source package rows (phpmyadmin); 10 state rows across 2 repos (3.22-community, edge-community); fixed 0, open 10. https://security.alpinelinux.org/vuln/CVE-2020-26934
debian not yet assigned CVE-2020-26934 not yet assigned priority: Debian including 1 source packages (phpmyadmin), 4 status rows across 4 suites (bookworm, bullseye, sid, trixie): resolved 4. https://security-tracker.debian.org/tracker/CVE-2020-26934
gentoo normal CVE-2020-26934: 1 GLSA(s) (202101-35), 1 atom(s) (dev-db/phpmyadmin); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2020-26934
ubuntu medium CVE-2020-26934 medium priority: Ubuntu including 1 source packages (phpmyadmin), 16 status rows across 16 suites (bionic, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): not-affected 11, needed 2, released 2, needs-triage 1. https://ubuntu.com/security/CVE-2020-26934

Affected software / configurations for CVE-2020-26934

Vendor Product Version Raw CPE
phpmyadmin phpmyadmin >= 4.9.0, < 4.9.6 cpe:2.3:a:phpmyadmin:phpmyadmin:*:*:*:*:*:*:*:*
phpmyadmin phpmyadmin >= 5.0.0, < 5.0.3 cpe:2.3:a:phpmyadmin:phpmyadmin:*:*:*:*:*:*:*:*
opensuse backports_sle 15.0 cpe:2.3:a:opensuse:backports_sle:15.0:-:*:*:*:*:*:*
opensuse backports_sle 15.0 cpe:2.3:a:opensuse:backports_sle:15.0:sp1:*:*:*:*:*:*
opensuse backports_sle 15.0 cpe:2.3:a:opensuse:backports_sle:15.0:sp2:*:*:*:*:*:*
opensuse leap 15.1 cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
opensuse leap 15.2 cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*
fedoraproject fedora 31 cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
fedoraproject fedora 32 cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
fedoraproject fedora 33 cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
debian debian_linux 9.0 cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

References for CVE-2020-26934

URL Tags
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00027.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00005.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/10/msg00024.html Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FHST4E5IJG7IKZTTW3R6MEZPVHJZ472K/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PXK37YEHSDYCIPQSYEMN2OFTP2ZLM7DO/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TNLGHVDNAEZEGRTUESSSQFM7MZTHIDQ5/
https://security.gentoo.org/glsa/202101-35 Third Party Advisory
https://www.phpmyadmin.net/security/PMASA-2020-5/ Patch Vendor Advisory
cvelogic Threat Intelligence