The XWiki licensor application, which manages and enforce application licenses for paid extensions, includes the document Licenses.Code.LicenseJSON that provides information for admins regarding active licenses. This document is public and thus exposes this information publicly. The information includes the instance's id as well as first and last name and email of the license owner. This is a leak of information that isn't supposed to be public. The instance id allows associating data on the active installs data with the concrete XWiki instance. Active installs assures that "there's no way to find who's having a given UUID" (referring to the instance id). Further, the information who the license owner is and information about the obtained licenses can be used for targeted phishing attacks. Also, while user information is normally public, email addresses might only be displayed obfuscated, depending on the configuration. This has been fixed in Application Licensing 1.24.2. There are no known workarounds besides upgrading.
CVE-2024-26138
This medium-severity CVE scores 5.3 under NVD CVSS v3. EPSS exploit probability: 0.5%, top 61% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 5.3
- EG Score
- 5.3(medium)
- EG Risk
- 39(Track)EG Risk 39/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity53% × 45%Exploitation0% × 40%Automatability100% × 15%Action: Routine — remediate on your standard cadence. - EPSS
- 39.4%
- KEV
- Not listed
Published
February 21, 2024
Last Modified
February 5, 2025
References (6)
- security-advisories@githubhttps://extensions.xwiki.org/xwiki/bin/view/Extension/Active%20Installs%202%20API
- security-advisories@githubhttps://github.com/xwikisas/application-licensing/commit/d168fb88fc0d121bf95e769ea21c55c00bebe5a6
- security-advisories@githubhttps://github.com/xwikisas/application-licensing/security/advisories/GHSA-4hfp-m9gv-m753
- af854a3a-2127-422b-91ae-364da2661108https://extensions.xwiki.org/xwiki/bin/view/Extension/Active%20Installs%202%20API
- af854a3a-2127-422b-91ae-364da2661108https://github.com/xwikisas/application-licensing/commit/d168fb88fc0d121bf95e769ea21c55c00bebe5a6
- af854a3a-2127-422b-91ae-364da2661108https://github.com/xwikisas/application-licensing/security/advisories/GHSA-4hfp-m9gv-m753
Affected Packages
(1 across 1 ecosystem)
Maven(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| com.xwiki.licensing:application-licensing-licensor-ui | — | 1.24.2 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 12× in last 7d / 45× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 108 total refreshes for this CVE.
- 2026-07-24 14:16 UTCEPSS rescore
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Related CVEs(same CWE)
Same CWE
10 shownCWE-862
Frequently asked(5)
What is CVE-2024-26138?
When was CVE-2024-26138 disclosed?
Is CVE-2024-26138 actively exploited?
What is the CVSS score of CVE-2024-26138?
How do I remediate CVE-2024-26138?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2024-26138
Is Your Infrastructure Affected by CVE-2024-26138?
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