How severe is CVE-2024-55877?

CVE-2024-55877 has a CVSS 3.x base score of 9.9, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-55877 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-55877?

CVE-2024-55877 primarily affects Xwiki. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-55877?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2024-55877 have an EU (EUVD) identifier?

Yes. CVE-2024-55877 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-3411.

When was CVE-2024-55877 published?

CVE-2024-55877 was published on 2024-12-12 and last updated on 2026-06-17.

CVE-2024-55877

CVE-2024-55877 is a critical-severity vulnerability in Xwiki with a CVSS 3.x base score of 9.9. 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-94.

Key facts

Severity: Critical (CVSS 3.x base score 9.9)
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-3411
Weakness: CWE-94
Affected product: Xwiki
Published: 2024-12-12
Last modified: 2026-06-17

Description

XWiki Platform is a generic wiki platform. Starting in version 9.7-rc-1 and prior to versions 15.10.11, 16.4.1, and 16.5.0, any user with an account can perform arbitrary remote code execution by adding instances of `XWiki.WikiMacroClass` to any page. This compromises the confidentiality, integrity and availability of the whole XWiki installation. This vulnerability has been fixed in XWiki 15.10.11, 16.4.1 and 16.5.0. It is possible to manually apply the patch to the page `XWiki.XWikiSyntaxMacrosList` as a workaround.

Frequently asked questions

What is CVE-2024-55877?: XWiki Platform is a generic wiki platform. Starting in version 9.7-rc-1 and prior to versions 15.10.11, 16.4.1, and 16.5.0, any user with an account can perform arbitrary remote code execution by adding instances of `XWiki.WikiMacroClass` to any page. This compromises the confidentiality, integrity and availability of the whole XWiki installation. This vulnerability has been fixed in XWiki 15.10.11, 16.4.1 and 16.5.0. It is possible to manually apply the patch to the page `XWiki.XWikiSyntaxMacrosList` as a workaround.
How severe is CVE-2024-55877?: CVE-2024-55877 has a CVSS 3.x base score of 9.9, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-55877 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-55877?: CVE-2024-55877 primarily affects Xwiki. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-55877?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2024-55877 have an EU (EUVD) identifier?: Yes. CVE-2024-55877 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-3411.
When was CVE-2024-55877 published?: CVE-2024-55877 was published on 2024-12-12 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:xwiki:xwiki:*:*:*:*:*:*:*:*
cpe:2.3:a:xwiki:xwiki:16.5.0:rc1:*:*:*:*:*:*

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