CVE-2026-26047

mediumpriority · track · 0EPSS 0.005 · 43 %ileDEEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.51% (43rd) EPSS

CVSS 6.5 · medium

Is it mine?

20 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · osv

EPSS · scored 2026-10-27

A denial-of-service vulnerability was identified in Moodle’s TeX formula editor. When rendering TeX content using mimetex, insufficient execution time limits could allow specially crafted formulas to consume excessive server resources. An authenticated user could abuse this behavior to degrade performance or cause service interruption.

cvss

Technical severity, 0–10. One row per scoring source.

6.5

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.16.5mediumAV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · patrick@puiterwijk.orgexploitability 2.8 · impact 3.6

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · OSV

v3.16mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-770USprimaryCWE-400USCWE-400USCWE-400USCWE-770US

affected products (20)

Products and version ranges known to be affected.

Open Source Moodle <4.5.9all versionscert_bundDE
Open Source Moodle <5.0.5all versionscert_bundDE
Open Source Moodle <5.1.2all versionscert_bundDE
Open Source Moodle< 4.5.9cert_bundDE
Open Source Moodle< 5.0.5cert_bundDE
Open Source Moodle< 5.1.2cert_bundDE
Мартин Догиамас Moodle4.5 → 4.5.8fstec_bduRU
Мартин Догиамас Moodle5.0 → 5.0.4fstec_bduRU
Мартин Догиамас Moodle5.1 → 5.1.1fstec_bduRU
ООО «Ред Софт» РЕД ОС≤ 7.3fstec_bduRU
ООО «Ред Софт» РЕД ОС≤ 8.0fstec_bduRU
moodle moodle< 4.5.9nvdUScpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
moodle moodle5.0.0 → 5.0.5nvdUScpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
moodle moodle5.1.0 → 5.1.2nvdUScpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
Bitnami moodle< 4.5.9osvUSpkg:bitnami/moodle
Bitnami moodle5.0.0 → 5.0.5osvUSpkg:bitnami/moodle
Bitnami moodle5.1.0 → 5.1.2osvUSpkg:bitnami/moodle
Packagist moodle/moodle< 4.5.9osvUSpkg:composer/moodle/moodle
Packagist moodle/moodle5.0.0-beta → 5.0.5osvUSpkg:composer/moodle/moodle
Packagist moodle/moodle5.1.0-beta → 5.1.2osvUSpkg:composer/moodle/moodle

advisories (3)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-0447Moodle: Mehrere SchwachstellenDeutsch2026-02-17csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Moodle ausnutzen, um beliebigen Programmcode auszuführen und um einen Denial of Service Angriff durchzuführen.
GHSA-cg8j-5cr2-568qMoodle TeX formula editor is vulnerable to DoS through lack of execution time limits2026-02-21ghsa · osvUS
A Denial of Service vulnerability was identified in Moodle’s TeX formula editor. When rendering TeX content using mimetex, insufficient execution time limits could allow specially crafted formulas to consume excessive server resources. An authenticated user could abuse this behavior to degrade performance or cause service interruption.
BIT-moodle-2026-26047Moodle: moodle: uncontrolled resource consumption in tex formula editor leading to denial of service2026-03-02vendor · osvUS
A denial-of-service vulnerability was identified in Moodle’s TeX formula editor. When rendering TeX content using mimetex, insufficient execution time limits could allow specially crafted formulas to consume excessive server resources. An authenticated user could abuse this behavior to degrade performance or cause service interruption.

also known as (6)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu osv cert_bund nvd NVD CVE.org MITRE

published 2026-02-21modified 2026-06-17

related (3,269)

Related entries.

ID	severity	EPSS	exploitable	published
CVE-2025-53521US	—OT critical	2.30% (83rd)	KEV	2025-10-15
When a BIG-IP APM access policy is configured on a virtual server, specific malicious traffic can lead to Remote Code Execution (RCE). Note: Software versions which have reached…
CVE-2022-22963US	critical9.8OT critical	99.9% (100th)	KEV	2022-04-01
In Spring Cloud Function versions 3.1.6, 3.2.2 and older unsupported versions, when using routing functionality it is possible for a user to provide a specially crafted SpEL as a r…
CVE-2020-3569US	high8.6OT critical	3.32% (89th)	KEV	2020-09-23
Multiple vulnerabilities in the Distance Vector Multicast Routing Protocol (DVMRP) feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to either immedi…
CVE-2020-3566US	high8.6OT critical	3.70% (90th)	KEV	2020-08-29
A vulnerability in the Distance Vector Multicast Routing Protocol (DVMRP) feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to exhaust process memory…
CVE-2023-50387US	high7.5	100.0% (100th)	Exploit	2024-02-14
Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related RFCs) allow remote attackers to cause a denial of service (CPU consumption) via one or more D…

+3264 more

references (6)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan