How severe is CVE-2021-46876?

CVE-2021-46876 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2021-46876 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-46876?

CVE-2021-46876 affects Ibexa Ez Platform Kernel. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-46876?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-46876 published?

CVE-2021-46876 was published on 2023-03-12 and last updated on 2026-06-17.

CVE-2021-46876

CVE-2021-46876 is a medium-severity vulnerability in Ibexa Ez Platform Kernel with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-203.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-203
Affected product: Ibexa Ez Platform Kernel
Published: 2023-03-12
Last modified: 2026-06-17

Description

An issue was discovered in eZ Publish Ibexa Kernel before 7.5.15.1. The /user/sessions endpoint can be abused to determine account existence.

Frequently asked questions

What is CVE-2021-46876?: An issue was discovered in eZ Publish Ibexa Kernel before 7.5.15.1. The /user/sessions endpoint can be abused to determine account existence.
How severe is CVE-2021-46876?: CVE-2021-46876 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2021-46876 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-46876?: CVE-2021-46876 affects Ibexa Ez Platform Kernel. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-46876?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-46876 published?: CVE-2021-46876 was published on 2023-03-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:ibexa:ez_platform_kernel:*:*:*:*:*:*:*:*

More vulnerabilities in Ibexa Ez Platform Kernel

CVE-2022-48367 — Critical (CVSS 9.8): An issue was discovered in eZ Publish Ibexa Kernel before 7.5.28. Access control based on object state is mishandled.
CVE-2022-25337 — Critical (CVSS 9.8): Ibexa DXP ezsystems/ezpublish-kernel 7.5.x before 7.5.26 and 1.3.x before 1.3.12 allows injection attacks via image…
CVE-2022-48365 — High (CVSS 7.2): An issue was discovered in eZ Platform Ibexa Kernel before 1.3.26. The Company admin role gives excessive privileges.
CVE-2021-46875 — Medium (CVSS 6.1): An issue was discovered in eZ Platform Ibexa Kernel before 1.3.1.1. An XSS attack can occur because JavaScript code can…
CVE-2022-25336 — Medium (CVSS 5.3): Ibexa DXP ezsystems/ezpublish-kernel 7.5.x before 7.5.26 and 1.3.x before 1.3.12 allows Insecure Direct Object…
CVE-2022-48366 — Low (CVSS 3.7): An issue was discovered in eZ Platform Ibexa Kernel before 1.3.19. It allows determining account existence via a timing…

All CVEs affecting Ibexa Ez Platform Kernel →

Other CWE-203 (Observable Discrepancy) vulnerabilities

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CVE-2024-25714 — Critical (CVSS 9.8): In Rhonabwy through 1.1.13, HMAC signature verification uses a strcmp function that is vulnerable to side-channel…
CVE-2024-25191 — Critical (CVSS 9.8): php-jwt 1.0.0 uses strcmp (which is not constant time) to verify authentication, which makes it easier to bypass…
CVE-2024-25190 — Critical (CVSS 9.8): l8w8jwt 2.2.1 uses memcmp (which is not constant time) to verify authentication, which makes it easier to bypass…

Browse all CWE-203 (Observable Discrepancy) vulnerabilities →