CVE-2026-121261

phpMyAdmin ShapeFile SHP File loadFromFile infinite loop

5.3 Medium

A vulnerability has been found in phpMyAdmin ShapeFile up to 4.0.1. Impacted is the function ShapeRecord::loadFromFile of the component SHP File Handler. Such manipulation leads to infinite loop. The attack can be executed remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Passive

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: Low

Exploit likelihood

0.29%Unchanged since Nov 4, 2026

What each source reports

CVE List Score used 5.3

phpMyAdmin ShapeFile SHP File loadFromFile infinite loop

Record: CVE-2026-121261
CVSS 4.0: 5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
CVSS 3.1: 4.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:P/RL:X/RC:C
CVSS 3.0: 4.3 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:P/RL:X/RC:C
CVSS 2.0: 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:ND/RC:C
Weakness: CWE-835, CWE-404
Updated: 2026-11-07

EUVDEUVD-2026-116068 5.3

Record: EUVD-2026-116068
CVSS 4.0: 5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
Updated: 2026-11-07

GitHub AdvisoriesGHSA-7fh6-w638-g9vf 2.1

A vulnerability has been found in phpMyAdmin ShapeFile up to 4.0.1. Impacted is the function...

Record: GHSA-7fh6-w638-g9vf
CVSS 4.0: 2.1 LowCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 4.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Weakness: CWE-404
Updated: 2026-11-03

NVD 2.1

Record: CVE-2026-121261
CVSS 4.0: 2.1 LowCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 4.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness: CWE-404, CWE-835
Updated: 2026-11-07

OSVUBUNTU-CVE-2026-121261 2.1

Record: UBUNTU-CVE-2026-121261
CVSS 4.0: 2.1 LowCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
CVSS 3.1: 4.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Updated: 2026-11-05

Affected products

phpmyadmin shapefile

Affected packages

Affected packages
Package	Affected	Fixed
`phpmyadmin` Ubuntu:Pro:14.04:LTS	All versions, plus listed versions 4:4.0.6-14:4.0.8-14:4.0.9-14:4.0.10-14:4.0.10-1ubuntu0.1 Show 4 moreShow less 4:4.0.10-1ubuntu0.1+esm14:4.0.10-1ubuntu0.1+esm24:4.0.10-1ubuntu0.1+esm34:4.0.10-1ubuntu0.1+esm4	None known
`phpmyadmin` Ubuntu:Pro:16.04:LTS	All versions, plus listed versions 4:4.4.13.1-14:4.5.0.2-24:4.5.1-14:4.5.1-24:4.5.1-3 Show 13 moreShow less 4:4.5.2-14:4.5.2-24:4.5.3.1-14:4.5.4-14:4.5.4.1-24:4.5.4.1-2ubuntu14:4.5.4.1-2ubuntu24:4.5.4.1-2ubuntu2.14:4.5.4.1-2ubuntu2.1+esm24:4.5.4.1-2ubuntu2.1+esm34:4.5.4.1-2ubuntu2.1+esm44:4.5.4.1-2ubuntu2.1+esm54:4.5.4.1-2ubuntu2.1+esm6	None known
`phpmyadmin` Ubuntu:Pro:18.04:LTS	All versions, plus listed versions 4:4.6.6-54:4.6.6-5ubuntu0.2+esm14:4.6.6-5ubuntu0.2+esm24:4.6.6-5ubuntu0.54:4.6.6-5ubuntu0.5+esm1	None known
`phpmyadmin` Ubuntu:Pro:20.04:LTS	All versions, plus listed versions 4:4.9.1+dfsg1-24:4.9.2+dfsg1-14:4.9.5+dfsg1-1ubuntu14:4.9.5+dfsg1-24:4.9.5+dfsg1-2ubuntu0.1~esm1	None known
`phpmyadmin` Ubuntu:22.04:LTS	All versions, plus listed versions 4:5.0.4+dfsg2-2ubuntu54:5.1.1+dfsg1-5ubuntu1	None known
`phpmyadmin` Ubuntu:24.04:LTS	All versions, plus listed versions 4:5.2.1+dfsg-1ubuntu14:5.2.1+dfsg-2ubuntu14:5.2.1+dfsg-2ubuntu24:5.2.1+dfsg-3	None known
`phpmyadmin` Ubuntu:26.10	All versions, plus listed versions 4:5.2.3+dfsg-14:5.2.4~dev~git20260809.e0909b211b+dfsg-1	None known
`phpmyadmin` Ubuntu:26.04:LTS	All versions, plus listed versions 4:5.2.2-really+dfsg-24:5.2.3+dfsg-1	None known

History

History
Recorded	Changed	Sources
Nov 5, 2026	affected, aliases, references	OSV
Nov 3, 2026	published	EUVD
Nov 3, 2026	published	EUVD, NVD
Nov 3, 2026	aliases, references	GitHub Advisories
Nov 3, 2026	aliases, published	EUVD
Nov 3, 2026	first indexed	CVE List

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-121261 is a medium vulnerability (CVSS 5.3) in Phpmyadmin Shapefile, published November 3, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.29%, the 22nd percentile. No source names a fixed version.