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High 7.4Published Oct 2, 2026
CVE-2026-104733User Impersonation/Authorization Bypass in XMPP Server ejabberd
Updated under an hour ago ()
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It affects ProcessOne ejabberd. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.21%, higher than 11% of scored CVEs.
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User Impersonation in ProcessOnes XMMP Server ejabberd <= 26.04 allows an attacker to impersonate arbitrary users via unvalidated authzid parameter in SASL-PLAIN mechanism.
- CVSS
- 7.4 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:H/SC:H/SI:H/SA:H/E:P
- Weakness (CWE)
- CWE-290
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.21% (percentile 11)
- Assigned by
- NCSC.ch
- NVD analysis
- Deferred
- Record last updated
- Oct 2, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
ProcessOne ejabberd processone:ejabberd (from the name) | through 26.04; fixed at 26.07 | CNA record |
References
- https://www.nsideattacklogic.de/advisories/NSIDE-SA-2026-004/third-party-advisory
- https://github.com/processone/ejabberd/releases#release-26.07release-notes
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.