CVE-2025-26532VulnerabilityPublished 7 Aug 2025Updated 8 Sep 2026

CVE-2025-26532: Moodle · Teachers can evade trusttext config when restoring glossary entries

Affects moodleSource GCVE Database

Not known to be exploited · fixed in 4.5.2 : update moodle when convenient.

Data as of 25 Oct 2026, 19:02 UTC

Severity

Medium

Rated by Threat Radar · No CVSS score from NVD or the CNA

EPSS: 0.2% chance of exploitation in 30 days – higher than 17% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 4.5.2, 4.4.6, 4.3.10 +1

Exploitation evidence

Disclosed: evidence found.
CVE published 7 Aug 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade moodle to 4.5.2, 4.4.6, 4.3.10 or 4.1.16.

Patches and advisories

git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-84003 (opens in a new tab)

Affected software

Product	Affected	Fixed in
Bitnamimoodle`pkg:bitnami/moodle`Other threats	Affected >=4.1.0 <4.1.16 >=4.3.0 <4.3.10 >=4.4.0 <4.4.6 >=4.5.0 <4.5.2	Fixed in 4.1.16 4.3.10 4.4.6 4.5.2

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A patch is available and should be applied to affected Moodle versions. The fix ensures that trusttext checks are properly enforced during glossary entry restoration. Administrators should update Moodle to versions 4.1.16 or later, 4.3.10 or later, 4.4.6 or later, or 4.5.2 or later to remediate this vulnerability.

Description

A vulnerability in Moodle allows teachers to bypass the trusttext configuration when restoring glossary entries. This issue occurs because additional checks were needed to ensure that trusttext is properly applied during the restoration process. The vulnerability affects multiple Moodle versions prior to their respective patches. A fix is available to address this issue.

Impact

The impact is a medium-severity security issue where teachers can bypass content filtering controls (trusttext) when restoring glossary entries. This could allow the inclusion of HTML or other content that would normally be restricted, potentially leading to content injection risks within the glossary feature. There are no known exploits in the wild at this time.

Summary

The vulnerability in Moodle (CVE-2025-26532) involves insufficient enforcement of the trusttext setting when teachers restore glossary entries. Trusttext is a security feature that controls which HTML tags and attributes are allowed in user-submitted content. Due to missing checks, teachers could restore glossary entries that circumvent the trusttext restrictions, potentially allowing disallowed content. This issue affects Moodle versions 4.1.0 through 4.1.15, 4.3.0 through 4.3.9, 4.4.0 through 4.4.5, and 4.5.0 through 4.5.1. The vulnerability has been patched as per the Moodle git repository commit MDL-84003.

References

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