HOMEVULNERABILITIESCVE-2026-33266
HIGH

CVE-2026-33266

CWE-321Published: April 9, 2026· Updated: Apr 15, 2026

7.5
CVSS v3.1
EPSS:0.01%probability of exploitation in 30 daysPercentile:1.1th

Official Description

Use of Hard-coded Cryptographic Key vulnerability in Apache OpenMeetings.

The remember-me cookie encryption key is set to default value in openmeetings.properties and not being auto-rotated. In case OM admin hasn't changed the default encryption key, an attacker who has stolen a cookie from a logged-in user can get full user credentials.

This issue affects Apache OpenMeetings: from 6.1.0 before 9.0.0.

Users are recommended to upgrade to version 9.0.0, which fixes the issue.

NVD Source

Technical Analysis

CVE-2026-33266 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Vendors & Products

Apache1 product
openmeetings
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://lists.apache.org/thread/b05jnp9563v49zq494lox9kjbhhf2w66
ADVISORYhttp://www.openwall.com/lists/oss-security/2026/04/09/11

All References (2)

→
https://lists.apache.org/thread/b05jnp9563v49zq494lox9kjbhhf2w66Mailing List · Vendor Advisory
→
http://www.openwall.com/lists/oss-security/2026/04/09/11Mailing List · Third Party Advisory

Quick Facts

CVE IDCVE-2026-33266
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-321
CISA KEVNo
EPSS (30d)0.01%
Affected1 vendor
PublishedApr 9, 2026

Related CVEs (CWE-321)

CVE-2026-9260
9.8
CVE-2026-26335
9.8
CVE-2026-28742
9.8
CVE-2026-32644
9.8
CVE-2026-9642
9.8
CVE-2025-14923
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-33266 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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