How severe is CVE-2025-27603?

CVE-2025-27603 has a CVSS score of 9.1/10, rated CRITICAL. Immediate patching is strongly recommended.

How do I fix CVE-2025-27603?

Update com.xwiki.confluencepro:application-confluence-migrator-pro-ui to 1.2.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-27603 is resolved across your whole dependency graph.

How do I detect CVE-2025-27603 in my Maven dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for com.xwiki.confluencepro:application-confluence-migrator-pro-ui, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2025-27603 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Is CVE-2025-27603 actively exploited in the wild?

No public exploit code has been indexed for CVE-2025-27603 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 CVE-2025-27603?

CVE-2025-27603 has an EPSS (Exploit Prediction Scoring System) score of 0.7%, 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 CVE-2025-27603?

CVE-2025-27603 is classified as CWE-95 (CWE-95). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2025-27603 published, and has it been updated?

CVE-2025-27603 was published on March 7, 2025 and was last updated on August 12, 2026. 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

CRITICAL severity

CVE-2025-27603 — application-confluence-mi…

CRITICALFix: xwikisas/application-confluence-migrator-pro@36cef22

CVE-2025-27603 is a critical-severity (CVSS 9.1) CWE-95 vulnerability in com.xwiki.confluencepro:application-confluence-migrator-pro-ui. A fix is available for com.xwiki.confluencepro:application-confluence-migrator-pro-ui — see the affected versions and patch details below.

XWiki Confluence Migrator Pro allows Remote Code Execution via unescaped translations

Also known asGHSA-6qvp-39mm-95v8

Published

Mar 7, 2025

Updated

Aug 12, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Sep 26, 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.
A successful exploit gives an attacker total control of the affected component, not partial access.

Exploitation and automatability from CISA’s SSVC triage for CVE-2025-27603.

EPSS Exploitation Probability

via FIRST.org ↗

0.7%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

CVE-2025-27603 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 379,842 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

1 pkg affected

☕com.xwiki.confluencepro:application-confluence-migrator-pro-ui

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

A user that doesn't have programming rights can execute arbitrary code when creating a page using the Migration Page template. A possible attack vector is the following:

Create a page and add the following content:

confluencepro.job.question.advanced.input={{/html}} {{async async="true" cached="false" context="doc.reference"}}{{groovy}}println("hello from groovy!"){{/groovy}}{{/async}}

Use the object editor to add an object of type XWiki.TranslationDocumentClass with scope USER.
Access an unexisting page using the MigrationTemplate

http://localhost:8080/xwiki/bin/edit/Page123?template=ConfluenceMigratorPro.Code.MigrationTemplate

It is expected that {{/html}} {{async async="true" cached="false" context="doc.reference"}}{{groovy}}println("hello from groovy!"){{/groovy}}{{/async}} will be present on the page, however, hello from groovy will be printed.

Patches

The issue will be fixed as part of v1.2. The fix was added with commit 35cef22

Workarounds

There are no known workarounds besides upgrading.

References

No references.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`com.xwiki.confluencepro:application-confluence-migrator-pro-ui`	≥ 1.0&&< 1.2.0	1.2.0`com.xwiki.confluencepro:application-confluence-migrator-pro-ui:1.2.0`

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for com.xwiki.confluencepro:application-confluence-migrator-pro-ui, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update com.xwiki.confluencepro:application-confluence-migrator-pro-ui to 1.2.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-27603 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

### Impact A user that doesn't have programming rights can execute arbitrary code when creating a page using the Migration Page template. A possible attack vector is the following: * Create a page and add the following content: ``` confluencepro.job.question.advanced.input={{/html}} {{async async="true" cached="false" context="doc.reference"}}{{groovy}}println("hello from groovy!"){{/groovy}}{{/async}} ``` * Use the object editor to add an object of type `XWiki.TranslationDocumentClass` with scope `USER`. * Access an unexisting page using the `MigrationTemplate` ``` http://localhost:8080/xwi