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CVE-2023-41104

20
FAUCET Score

CVE-2023-41104 is an out-of-bounds memory access vulnerability in libvmod-digest versions prior to 1.0.3, affecting Varnish Enterprise 6.0.x before 6.0.11r5. This flaw, rated Medium (CVSS 6.5), can lead to authentication bypass and information disclosure, with the specific impact dependent on the Varnish Configuration Language (VCL) setup. While the vulnerability is publicly disclosed, there is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding it.

Impacted Technologies

VendorProductVersion(s)CPE
>= 6.0.0, < 6.0.11CPE matchmatch criteria
cpe:2.3:a:varnish-software:varnish_enterprise:*:*:*:*:*:*:*:*
6.0.11CPE matchmatch criteria
cpe:2.3:a:varnish-software:varnish_enterprise:6.0.11:-:*:*:*:*:*:*
6.0.11CPE matchmatch criteria
cpe:2.3:a:varnish-software:varnish_enterprise:6.0.11:r1:*:*:*:*:*:*
6.0.11CPE matchmatch criteria
cpe:2.3:a:varnish-software:varnish_enterprise:6.0.11:r2:*:*:*:*:*:*
6.0.11CPE matchmatch criteria
cpe:2.3:a:varnish-software:varnish_enterprise:6.0.11:r3:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
2.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.49%
Probability of exploitation in next 30 days
EPSS Percentile
39.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0049 is in the 25th percentile among its peer group of 23,701 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

docs.varnish-software.com / security/VSV00012
MitigationVendor Advisory
github.com / varnish/libvmod-digest/releases/tag/libvmod-digest-1.0.3
Release Notes
varnish-cache.org / security/VSV00012.html
PatchVendor Advisory