What is GHSA-pjhg-9wr9-rj96?

### Impact An open redirect vulnerability in the HTML conversion request filter allows attackers to construct URLs on an XWiki instance that redirect to any URL. To reproduce, open ` /xwiki/bin/view/Main/?foo=bar&foo_syntax=invalid&RequiresHTMLConversion=foo&xerror=https://www.example.com/` where ` ` is the URL of your XWiki installation. ### Patches This bug has been fixed in XWiki 15.10.13, 16.4.4 and 16.8.0 by validating the domain of the redirect URL against the configured safe domains and the current request's domain. ### Workarounds A web application firewall cou

How severe is GHSA-pjhg-9wr9-rj96?

GHSA-pjhg-9wr9-rj96 has a CVSS score of 6.1/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by GHSA-pjhg-9wr9-rj96?

GHSA-pjhg-9wr9-rj96 affects the following packages: org.xwiki.platform:xwiki-platform-wysiwyg-api (Maven), org.xwiki.platform:xwiki-platform-wysiwyg-api (Maven), org.xwiki.platform:xwiki-platform-wysiwyg-api (Maven). Ecosystems affected: Maven.

How do I fix GHSA-pjhg-9wr9-rj96?

Update org.xwiki.platform:xwiki-platform-wysiwyg-api to 15.10.13 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-pjhg-9wr9-rj96 is resolved across your whole dependency graph.

How do I detect GHSA-pjhg-9wr9-rj96 in my Maven dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.xwiki.platform:xwiki-platform-wysiwyg-api, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate GHSA-pjhg-9wr9-rj96 if there is no patch (or I can't update yet)?

Stop reflecting attacker-controlled destinations: resolve every redirect target against an allowlist of paths or hosts you own, prefer a server-side key over a full URL in the request, and reject absolute URLs entirely where the flow only ever needs a relative one.

Is GHSA-pjhg-9wr9-rj96 actively exploited in the wild?

No public exploit code has been indexed for GHSA-pjhg-9wr9-rj96 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for GHSA-pjhg-9wr9-rj96?

GHSA-pjhg-9wr9-rj96 has an EPSS (Exploit Prediction Scoring System) score of 0.6%, placing it in the 49th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is GHSA-pjhg-9wr9-rj96?

GHSA-pjhg-9wr9-rj96 is classified as Open Redirect (CWE-601). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

Is there exploit tooling available for GHSA-pjhg-9wr9-rj96?

A Nuclei detection template exists for GHSA-pjhg-9wr9-rj96, meaning automated scanners can fingerprint it. Public exploit tooling significantly increases real-world risk — prioritize patching and ensure detection coverage. Exploit tooling should only ever be used in isolated, authorized testing environments.

When was GHSA-pjhg-9wr9-rj96 published, and has it been updated?

GHSA-pjhg-9wr9-rj96 was published on April 29, 2025 and was last updated on April 30, 2025. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

☕

☕ Maven

Not in CISA KEV

MEDIUM severity

org.xwiki.platform:xwiki-platform-wysiwyg-api Open Redirect vulnerabilityGHSA-pjhg-9wr9-rj96

MEDIUMFix: xwiki/xwiki-platform@6dab790

GHSA-pjhg-9wr9-rj96 is a medium-severity (CVSS 6.1) Open Redirect vulnerability in org.xwiki.platform:xwiki-platform-wysiwyg-api. A fix is available for org.xwiki.platform:xwiki-platform-wysiwyg-api — see the affected versions and patch details below.

Also known asCVE-2025-32970

Published

Apr 29, 2025

Updated

Apr 30, 2025

Affected

3 pkgs

Patched

3 / 3

Exploits

None indexed

Exploitation data as of Nov 9, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

Proof-of-concept exploit code exists

CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.

Exploitation and automatability from CISA’s SSVC triage for GHSA-pjhg-9wr9-rj96.

EPSS Exploitation Probability

via FIRST.org ↗

0.6%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs49th percentile — riskier than 49% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

3 pkgs affected

☕org.xwiki.platform:xwiki-platform-wysiwyg-api☕org.xwiki.platform:xwiki-platform-wysiwyg-api☕org.xwiki.platform:xwiki-platform-wysiwyg-api

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

Impact

An open redirect vulnerability in the HTML conversion request filter allows attackers to construct URLs on an XWiki instance that redirect to any URL. To reproduce, open <xwiki-host>/xwiki/bin/view/Main/?foo=bar&foo_syntax=invalid&RequiresHTMLConversion=foo&xerror=https://www.example.com/ where <xwiki-host> is the URL of your XWiki installation.

Patches

This bug has been fixed in XWiki 15.10.13, 16.4.4 and 16.8.0 by validating the domain of the redirect URL against the configured safe domains and the current request's domain.

Workarounds

A web application firewall could be configured to reject requests with the xerror parameter as from our analysis this parameter isn't used anymore. For requests with the RequiresHTMLConversion parameter set, the referrer URL should be checked if it points to the XWiki installation. Apart from that, we're not aware of any workarounds.

Affected Packages

3 total 3 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`org.xwiki.platform:xwiki-platform-wysiwyg-api`	≥ 13.5-rc-1&&< 15.10.13	15.10.13`org.xwiki.platform:xwiki-platform-wysiwyg-api:15.10.13`
☕Maven	`org.xwiki.platform:xwiki-platform-wysiwyg-api`	≥ 16.0.0-rc-1&&< 16.4.4	16.4.4`org.xwiki.platform:xwiki-platform-wysiwyg-api:16.4.4`
☕Maven	`org.xwiki.platform:xwiki-platform-wysiwyg-api`	≥ 16.5.0-rc-1&&< 16.8.0	16.8.0`org.xwiki.platform:xwiki-platform-wysiwyg-api:16.8.0`

Affected Products

1 product · 4 configurations

Application

xwikixwiki

≥ 16.5.0 && < 16.8.0

1 version

16.8.0

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.xwiki.platform:xwiki-platform-wysiwyg-api, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.xwiki.platform:xwiki-platform-wysiwyg-api to 15.10.13 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-pjhg-9wr9-rj96 is resolved across your whole dependency graph.
Workarounds
Stop reflecting attacker-controlled destinations: resolve every redirect target against an allowlist of paths or hosts you own, prefer a server-side key over a full URL in the request, and reject absolute URLs entirely where the flow only ever needs a relative one.

How to detect GHSA-pjhg-9wr9-rj96

A community-maintained Nuclei template exists for this CVE. You can scan for it directly:

nuclei -id ghsa-pjhg-9wr9-rj96 -u https://target

Template: XWiki WYSIWYG API - Open Redirect
Severity: medium
Impact: Attackers can redirect users to malicious external websites through the xerror parameter, potentially enabling phishing attacks and credential theft.
Remediation: Upgrade to the latest XWiki version that properly validates redirect URLs in the WYSIWYG API.

Template by ProjectDiscovery nuclei-templates (ritikchaddha), MIT licensed. View the full template. Scan only systems you are authorised to test.

Frequently Asked Questions

### Impact An open redirect vulnerability in the HTML conversion request filter allows attackers to construct URLs on an XWiki instance that redirect to any URL. To reproduce, open `<xwiki-host>/xwiki/bin/view/Main/?foo=bar&foo_syntax=invalid&RequiresHTMLConversion=foo&xerror=https://www.example.com/` where `<xwiki-host>` is the URL of your XWiki installation. ### Patches This bug has been fixed in XWiki 15.10.13, 16.4.4 and 16.8.0 by validating the domain of the redirect URL against the configured safe domains and the current request's domain. ### Workarounds A web application firewall cou