CVE-2025-26527VulnerabilityPublished 10 Aug 2025Updated 8 Sep 2026

CVE-2025-26527: Moodle · Non-searchable tags can still be discovered on the tag search page and in the tags block

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: 0.3% chance of exploitation in 30 days – higher than 29% 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 10 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-83941 (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

Apply the official patch provided by Moodle as referenced in the commit MDL-83941. Upgrading affected Moodle versions to 4.1.16 or later, 4.3.10 or later, 4.4.6 or later, or 4.5.2 or later will remediate this vulnerability.

Description

A vulnerability in Moodle allows tags that are not intended to be visible to users to still be discovered through the tag search page or the tags block. This issue affects multiple Moodle versions prior to specific patched releases. The vulnerability has been assigned CVE-2025-26527 and is rated medium severity. A patch is available to address this issue.

Impact

Users may be able to discover tags that were intended to be hidden from them, potentially exposing information that should remain private or restricted. There is no indication of active exploitation in the wild. The impact is limited to information disclosure of non-searchable tags.

Summary

Moodle versions 4.1.0 through before 4.1.16, 4.3.0 through before 4.3.10, 4.4.0 through before 4.4.6, and 4.5.0 through before 4.5.2 contain a vulnerability where tags that are not meant to be visible to users can still be discovered via the tag search page or the tags block. This could lead to unintended information disclosure about tags within the system. The issue has been fixed in subsequent releases, and a patch is available as referenced in the Moodle git repository under commit MDL-83941.

References

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