Sakai: IDOR in Profile Image Deletion Allows Any Authenticated User to Delete Any User's Profile Image
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-639.
Summary
Sakai is a Collaboration and Learning Environment (CLE). From 23.0 until 23.5 and 25.3, the DELETE /api/users/{userId}/profile/image endpoint allows an authenticated user to delete another user's profile image because ProfileController.removeProfileImage() passes the attacker-controlled userId to ProfileServiceImpl.removeProfileImage() without verifying ownership, and profileImageUploadedRepository.deleteById(userId) removes the selected row. The related DELETE /api/users/{userId}/profile/pronunciation endpoint also omits session validation and ownership checks before ProfileServiceImpl.removePronunciationRecording() deletes the target user's recording. The upload path is not affected because it already verifies ownership, and superusers remain intentionally authorized to modify other profiles. Successful exploitation can repeatedly remove profile identity artifacts, including administrator and instructor images, and disrupt workflows that rely on those artifacts. This issue is fixed in versions 23.5, 25.3, and 26.0.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| sakaiproject | sakai | 23.0 to before 23.5; 25.0 – 25.2 | 23.5 | Patch available | CNA |
| — | org.sakaiproject.profile2:profile2-api (Maven) | 23.0 to before 23.5 | 23.5 | Patch available | GHSA-9284-fjc3-fmmj |
| — | org.sakaiproject.profile2:profile2-api (Maven) | 25.0 – 25.2 | — | No fix listed | GHSA-9284-fjc3-fmmj |
| — | org.sakaiproject.profile2:profile2-impl (Maven) | 23.0 to before 23.5 | 23.5 | Patch available | GHSA-9284-fjc3-fmmj |
| — | org.sakaiproject.profile2:profile2-impl (Maven) | 25.0 – 25.2 | — | No fix listed | GHSA-9284-fjc3-fmmj |
- sakai Vendorsakaiproject Affected 23.0 to before 23.5; 25.0 – 25.2 Fixed in 23.5 Patch available CNA
- org.sakaiproject.profile2:profile2-api (Maven) Vendor— Affected 23.0 to before 23.5 Fixed in 23.5 Patch available GHSA-9284-fjc3-fmmj
- org.sakaiproject.profile2:profile2-api (Maven) Vendor— Affected 25.0 – 25.2 Fixed in — No fix listed GHSA-9284-fjc3-fmmj
- org.sakaiproject.profile2:profile2-impl (Maven) Vendor— Affected 23.0 to before 23.5 Fixed in 23.5 Patch available GHSA-9284-fjc3-fmmj
- org.sakaiproject.profile2:profile2-impl (Maven) Vendor— Affected 25.0 – 25.2 Fixed in — No fix listed GHSA-9284-fjc3-fmmj
CPE names Threatist (inferred) · 1
Inferred from how NVD named this product before; not given by a source.
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:sakailms:sakai:*:*:*:*:*:*:*:* | — | — | sakaiproject |
- cpe:2.3:a:sakailms:sakai:*:*:*:*:*:*:*:* Versions — — ·sakaiproject
Remediation
- Fix · CNA sakai (sakaiproject) Fixed in 23.5
- Fix · GHSA-9284-fjc3-fmmj org.sakaiproject.profile2:profile2-api (Maven) Fixed in 23.5 Advisory →
- Fix · GHSA-9284-fjc3-fmmj org.sakaiproject.profile2:profile2-impl (Maven) Fixed in 23.5 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-54050
- 2026-10-03 Alias added: GHSA-9284-fjc3-fmmj
References
More sakaiproject vulnerabilities
- TI-2026-38983 Sakai Conversations has a Stored XSS Issue CVSS 3.1HIGH 8.7
- TI-2024-32130 Sakai: Kernel users created with type roleview can login as a normal user CVSS 4.0HIGH 8.7
- TI-2019-12135 Sakai through 12.6 allows XSS via a chat user name. CVSS 3.1MEDIUM 6.1
- TI-2025-38900 Sakai kernel-impl: predictable PRNG used to generate server‑side encryption key in EncryptionUtilityServiceImpl CVSS 3.1MEDIUM 5.9
- TI-2026-25799 SAK-52311: Sakai site-manage group titles can contain XSS content CVSS 4.0LOW 1.3
Sources
- CVE-2026-54050 · CVE Program
- CVE-2026-54050 · NVD
- FIRST EPSS
- GHSA-9284-fjc3-fmmj · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences