CVE-2011-4090

Exp

Serendipity before 1.6 has an XSS issue in the karma plugin which may allow privilege escalation.

Published: 2019-11-26 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-4090 is rated High Exploit Risk (71.2/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 3.11%). 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.68% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2011-4090

EDB-ID Source Kind Published Link
36283 exploit_db edb 2011-11-03 Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2011-4090

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 2026-06-15 1.43% 3.11% +1.68%
2 2026-02-08 1.67% 1.43% -0.25%
3 2025-09-06 — 1.67% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-4090

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.1 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 2.7 [email protected]
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2011-4090

OS Trackers for CVE-2011-4090

vendor priority summary link
ubuntu medium CVE-2011-4090 medium priority: Ubuntu including 1 source packages (serendipity), 17 status rows across 17 suites (hardy, lucid, maverick, natty, oneiric, precise, quantal, raring, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): DNE 8, ignored 8, released 1. https://ubuntu.com/security/CVE-2011-4090

Affected software / configurations for CVE-2011-4090

Vendor Product Version Raw CPE
s9y serendipity < 1.6 cpe:2.3:a:s9y:serendipity:*:*:*:*:*:*:*:*

References for CVE-2011-4090

cvelogic Threat Intelligence