CVE-2013-7436

noVNC before 0.5 does not set the secure flag for a cookie in an https session, which makes it easier for remote attackers to capture this cookie by intercepting its transmission within an http session.

Published: 2015-04-10 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]

Conclusion & alert: CVE-2013-7436 is rated Moderate Risk (40.1/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.61%). 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.

Exploit prediction scoring system (EPSS) score for CVE-2013-7436

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 1.34% 0.61% -0.73%
2 2025-03-29 0.61% 1.34% +0.73%
3 2025-03-19 0.61%

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-7436

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:N/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:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
8.6 2.9 [email protected]

Weakness enumeration for CVE-2013-7436

OS Trackers for CVE-2013-7436

vendor priority summary link
debian not yet assigned CVE-2013-7436 not yet assigned priority: Debian including 1 source packages (novnc), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2013-7436
redhat medium https://access.redhat.com/security/cve/CVE-2013-7436
suse medium CVE-2013-7436 severity moderate: SUSE including 1 source package names (novnc-0.4-0.13.1), 1 product×package rows across 1 product lines (SUSE OpenStack Cloud 5): Fixed 1. https://www.suse.com/security/cve/CVE-2013-7436/
ubuntu medium CVE-2013-7436 medium priority: Ubuntu including 1 source packages (novnc), 14 status rows across 14 suites (artful, bionic, cosmic, disco, lucid, precise, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): not-affected 9, DNE 2, ignored 2, released 1. https://ubuntu.com/security/CVE-2013-7436

Affected software / configurations for CVE-2013-7436

Vendor Product Version Raw CPE
kanaka novnc 0.4 cpe:2.3:a:kanaka:novnc:0.4:*:*:*:*:*:*:*

References for CVE-2013-7436

cvelogic Threat Intelligence