CVE-2023-26478

Q: How do I fix CVE-2023-26478?

Upgrade xwiki to 14.9 or later.

Q: Is CVE-2023-26478 being actively exploited?

Not that we know of. CVE-2023-26478 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.67% is the estimated probability that it will be exploited in the next 30 days. That is higher than 49% of all scored CVEs.

Q: How severe is CVE-2023-26478?

CVE-2023-26478 has a CVSS v3 base score of 6.6, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2023-26478 affect?

Published advisories record a fix for xwiki (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

MEDIUM

6.6

CVSS v3

NVD

Description

XWiki Platform is a generic wiki platform. Starting in version 14.3-rc-1, `org.xwiki.store.script.TemporaryAttachmentsScriptService#uploadTemporaryAttachment` returns an instance of `com.xpn.xwiki.doc.XWikiAttachment`. This class is not supported to be exposed to users without the `programing` right. `com.xpn.xwiki.api.Attachment` should be used instead and takes case of checking the user's rights before performing dangerous operations. This has been patched in versions 14.9-rc-1 and 14.4.6. There are no known workarounds for this issue.

CWE-749

How to fix

Remediation Available

xwikiNVD

Affected:>= 14.5, < 14.9Fixed in:14.9CVE-2023-26478derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredHigh

User InteractionNone

ScopeChanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityLow

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

Exploit Intelligence

0.67%probability of exploitation in 30 days

49thpercentile

Moderate risk: more likely to be exploited than 49% of all known CVEs.

References

Patch1

github.com

Exploit1

jira.xwiki.org

Vendor Advisory1

github.com

Related Vulnerabilities

Other CWE-749 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2021-34996	High	8.8	82%	-	-
CVE-2010-0738	Medium	5.3	79%	KEV + Ransom	-
CVE-2018-10931	Critical	9.8	68%	-	Fix
CVE-2010-1428	High	7.5	62%	KEV + Ransom	-
CVE-2023-38124	High	8.8	60%	-	Fix
CVE-2006-1547	High	7.5	55%	KEV	Fix

Common questions

How do I fix CVE-2023-26478?

Upgrade xwiki to 14.9 or later.

Is CVE-2023-26478 being actively exploited?

Not that we know of. CVE-2023-26478 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.67% is the estimated probability that it will be exploited in the next 30 days. That is higher than 49% of all scored CVEs.

How severe is CVE-2023-26478?

CVE-2023-26478 has a CVSS v3 base score of 6.6, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2023-26478 affect?

Published advisories record a fix for xwiki (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2023-26478

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.