ejabberd_c2s.erl in ejabberd before 2.1.3 allows remote attackers to cause a denial of service (daemon crash) via a large number of c2s (aka client2server) messages that trigger a queue overload.
Conclusion & alert: CVE-2010-0305 is rated Moderate Risk (47.4/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.88%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2025-03-30 | 3.05% | 1.88% | -1.17% |
| 2 | 2025-03-29 | 1.88% | 3.05% | +1.17% |
| 3 | 2025-03-17 | — | 1.88% | — |
Full EPSS history (7 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
medium | CVE-2010-0305 medium priority: Debian including 1 source packages (ejabberd), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2010-0305 |
gentoo
|
normal | CVE-2010-0305: 1 GLSA(s) (201206-10), 1 atom(s) (net-im/ejabberd); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2010-0305 |
redhat
|
low | — | https://access.redhat.com/security/cve/CVE-2010-0305 |
ubuntu
|
medium | CVE-2010-0305 medium priority: Ubuntu including 1 source packages (ejabberd), 23 status rows across 23 suites (artful, bionic, dapper, hardy, intrepid, jaunty, karmic, lucid, maverick, natty, oneiric, precise, quantal, raring, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): ignored 19, not-affected 2, DNE 1, released 1. | https://ubuntu.com/security/CVE-2010-0305 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| process-one | ejabberd | <= 2.1.2 | cpe:2.3:a:process-one:ejabberd:*:*:*:*:*:*:*:* |
| process-one | ejabberd | 0.9 | cpe:2.3:a:process-one:ejabberd:0.9:*:*:*:*:*:*:* |
| process-one | ejabberd | 0.9.1 | cpe:2.3:a:process-one:ejabberd:0.9.1:*:*:*:*:*:*:* |
| process-one | ejabberd | 0.9.8 | cpe:2.3:a:process-one:ejabberd:0.9.8:*:*:*:*:*:*:* |
| process-one | ejabberd | 1.0.0 | cpe:2.3:a:process-one:ejabberd:1.0.0:*:*:*:*:*:*:* |
| process-one | ejabberd | 1.1.0 | cpe:2.3:a:process-one:ejabberd:1.1.0:*:*:*:*:*:*:* |
| process-one | ejabberd | 1.1.1 | cpe:2.3:a:process-one:ejabberd:1.1.1:*:*:*:*:*:*:* |
| process-one | ejabberd | 1.1.1.0 | cpe:2.3:a:process-one:ejabberd:1.1.1.0:*:*:*:*:*:*:* |
| process-one | ejabberd | 1.1.1.1 | cpe:2.3:a:process-one:ejabberd:1.1.1.1:*:*:*:*:*:*:* |
| process-one | ejabberd | 1.1.2 | cpe:2.3:a:process-one:ejabberd:1.1.2:*:*:*:*:*:*:* |
| process-one | ejabberd | 1.1.3 | cpe:2.3:a:process-one:ejabberd:1.1.3:*:*:*:*:*:*:* |
| process-one | ejabberd | 1.1.14 | cpe:2.3:a:process-one:ejabberd:1.1.14:*:*:*:*:*:*:* |
| process-one | ejabberd | 2.0.0 | cpe:2.3:a:process-one:ejabberd:2.0.0:*:*:*:*:*:*:* |
| process-one | ejabberd | 2.0.0 | cpe:2.3:a:process-one:ejabberd:2.0.0:beta1:*:*:*:*:*:* |
| process-one | ejabberd | 2.0.0 | cpe:2.3:a:process-one:ejabberd:2.0.0:rc1:*:*:*:*:*:* |
| process-one | ejabberd | 2.0.1_2 | cpe:2.3:a:process-one:ejabberd:2.0.1_2:*:*:*:*:*:*:* |
| process-one | ejabberd | 2.0.2 | cpe:2.3:a:process-one:ejabberd:2.0.2:*:*:*:*:*:*:* |
| process-one | ejabberd | 2.0.3 | cpe:2.3:a:process-one:ejabberd:2.0.3:*:*:*:*:*:*:* |
| process-one | ejabberd | 2.0.4 | cpe:2.3:a:process-one:ejabberd:2.0.4:*:*:*:*:*:*:* |
| process-one | ejabberd | 2.0.5 | cpe:2.3:a:process-one:ejabberd:2.0.5:*:*:*:*:*:*:* |
| process-one | ejabberd | 2.1.0 | cpe:2.3:a:process-one:ejabberd:2.1.0:*:*:*:*:*:*:* |
| process-one | ejabberd | 2.1.1 | cpe:2.3:a:process-one:ejabberd:2.1.1:*:*:*:*:*:*:* |