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CVE-2021-46876

20
FAUCET Score

CVE-2021-46876 is a medium-severity vulnerability affecting eZ Publish Ibexa Kernel versions prior to 7.5.15.1, allowing attackers to determine the existence of user accounts. This is achieved by exploiting the /user/sessions endpoint, which can be done remotely with low attack complexity and no user interaction. While the CVSS score is 5.3, indicating a moderate risk, there is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 6.13.0, < 6.13.8.1CPE matchmatch criteria
cpe:2.3:o:ibexa:ez_platform_kernel:*:*:*:*:*:*:*:*
>= 7.5.0, < 7.5.15.1CPE matchmatch criteria
cpe:2.3:o:ibexa:ez_platform_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.51%
Probability of exploitation in next 30 days
EPSS Percentile
40.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0051 is in the 26th percentile among its peer group of 23,703 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

Patch Available

Vendor Patches (3)

composerpatch availablevia ghsa
Product: ezsystems/ezpublish-kernelFixed in: 6.13.8.1
composerpatch availablevia ghsa
Product: ezsystems/ezpublish-kernelFixed in: 7.5.15.1
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-gmrf-99gw-vvwjmedium

/user/sessions endpoint allows detecting valid accounts

Mar 11, 2021

References

github.com / ezsystems/ezpublish-kernel/commit/b496f073c3f03707d3531a6941dc098b84e3cbed
Patch
github.com / ezsystems/ezpublish-kernel/security/advisories/GHSA-gmrf-99gw-vvwj
Vendor Advisory