CVE-2015-3427

Quassel before 0.12.2 does not properly re-initialize the database session when the PostgreSQL database is restarted, which allows remote attackers to conduct SQL injection attacks via a \ (backslash) in a message. NOTE: this vulnerability exists because of an incomplete fix for CVE-2013-4422.

Published: 2015-05-14 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-3427 is rated Moderate Risk (58.9/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.00%). EPSS rose +1.56% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

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

Exploit prediction scoring system (EPSS) score for CVE-2015-3427

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 0.44% 2.00% +1.56%
2 2025-05-18 0.55% 0.44% -0.11%
3 2025-03-30 — 0.55% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-3427

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2015-3427

OS Trackers for CVE-2015-3427

vendor priority summary link
debian not yet assigned CVE-2015-3427 not yet assigned priority: Debian including 1 source packages (quassel), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2015-3427
ubuntu medium CVE-2015-3427 medium priority: Ubuntu including 1 source packages (quassel), 6 status rows across 6 suites (lucid, precise, trusty, upstream, utopic, vivid): released 3, ignored 1, needed 1, not-affected 1. https://ubuntu.com/security/CVE-2015-3427

Affected software / configurations for CVE-2015-3427

Vendor Product Version Raw CPE
quassel-irc quassel <= 0.12.1 cpe:2.3:a:quassel-irc:quassel:*:*:*:*:*:*:*:*
debian debian_linux 8.0 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

References for CVE-2015-3427

cvelogic Threat Intelligence