CVE-2023-26478
org.xwiki.platform:xwiki-platform-store-filesystem-oldcore has Exposed Dangerous Method or Function
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
org.xwiki.platform:xwiki-platform-store-filesystem-oldcore has Exposed Dangerous Method or Function
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.
- Record
CVE-2023-26478- CVSS 3.1
- 6.6 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L - Weakness
- CWE-749
- Updated
- 2026-11-02
EUVDEUVD-2023-0939
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.
- Record
EUVD-2023-0939- CVSS 3.1
- 6.6 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-8692-g6g9-gm5p
xwiki contains Exposed Dangerous Method or Function
Impact
org.xwiki.store.script.TemporaryAttachmentsScriptService#uploadTemporaryAttachment is returning 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.
Patches
This has been patched in the version 14.9-rc-1 and 14.4.6.
Workarounds
There's no workaround for this issue.
References
https://jira.xwiki.org/browse/XWIKI-20180
For more information
If you have any questions or comments about this advisory:
- Open an issue in JIRA
- Email us at security ML
- Record
GHSA-8692-g6g9-gm5p- CVSS 3.1
- 6.6 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L - Weakness
- CWE-749
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2023-26478- CVSS 3.1
- 6.6 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L - CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-749
- Updated
- 2026-11-02
OSV
org.xwiki.platform:xwiki-platform-store-filesystem-oldcore has Exposed Dangerous Method or Function
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.
- Record
CVE-2023-26478- CVSS 3.1
- 6.6 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L - Weakness
- CWE-749
- Updated
- 2026-11-11
OSVGHSA-8692-g6g9-gm5p
xwiki contains Exposed Dangerous Method or Function
Impact
org.xwiki.store.script.TemporaryAttachmentsScriptService#uploadTemporaryAttachment is returning 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.
Patches
This has been patched in the version 14.9-rc-1 and 14.4.6.
Workarounds
There's no workaround for this issue.
References
https://jira.xwiki.org/browse/XWIKI-20180
For more information
If you have any questions or comments about this advisory:
- Open an issue in JIRA
- Email us at security ML
- Record
GHSA-8692-g6g9-gm5p- CVSS 3.1
- 6.6 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L - Weakness
- CWE-749
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
org.xwiki.platform:xwiki-platform-store-filesystem-oldcoreMaven |
14.3-rc-1 up to 14.4.6 | 14.4.6 |
org.xwiki.platform:xwiki-platform-store-filesystem-oldcoreMaven |
14.5 up to 14.9-rc-1 | 14.9-rc-1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | OSV | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-26478 is a medium vulnerability (CVSS 6.6) in Xwiki, published March 2, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.67%, the 52nd percentile. Fixed in org.xwiki.platform:xwiki-platform-store-filesystem-oldcore 14.4.6.
References
github.com/xwiki/xwiki-platform/security/advisories/GHSA-8692-g6g9-gm5p
jira.xwiki.org/browse/XWIKI-20180
nvd.nist.gov/vuln/detail/CVE-2023-26478