An issue was discovered in Apereo Opencast 4.x through 10.x before 10.6.
Priority MEDIUM 40CWE-522Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub. Impact type from CWE-522.
Summary
An issue was discovered in Apereo Opencast 4.x through 10.x before 10.6. It sends system digest credentials during authentication attempts to arbitrary external services in some situations.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00829 57th percentileScored 2026-11-07
Fix Fixed org.opencastproject:opencast-common (Maven): 10.6
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- 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 |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | org.opencastproject:opencast-common (Maven) | before 10.6 | 10.6 | Patch available | GHSA-hcxx-mp6g-6gr9 |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- org.opencastproject:opencast-common (Maven) Vendor— Affected before 10.6 Fixed in 10.6 Patch available GHSA-hcxx-mp6g-6gr9
Remediation
- Fix · GHSA-hcxx-mp6g-6gr9 org.opencastproject:opencast-common (Maven) Fixed in 10.6 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2018-16153
- 2026-10-03 Alias added: GHSA-hcxx-mp6g-6gr9
References
Advisory 2
More Apereo Opencast vulnerabilities
- TI-2021-19627 Files Accessible to External Parties in Opencast CVSS 3.1CRITICAL 9.9
- TI-2025-38256 Opencast's editor accidentally publishes videos/overwrites publications #1626 CVSS 4.0LOW 2.3
- TI-2020-04262 Authentication Bypass For Endpoints With Anonymous Access in OpenCast CVSS 3.1CRITICAL 10.0
- TI-2020-04278 Hard-Coded Key Used For Remember-me Token in OpenCast CVSS 3.1HIGH 8.8
- TI-2021-12292 Opencast vulnerable to billion laughs attack (XML bomb) CVSS 3.1HIGH 8.1
- TI-2021-19613 HTTP Method Spoofing in Opencast CVSS 3.1HIGH 7.5
Sources
- CVE-2018-16153 · CVE Program
- CVE-2018-16153 · NVD
- FIRST EPSS
- GHSA-hcxx-mp6g-6gr9 · GitHub Advisory Database · CC BY 4.0
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