CVE-2025-24853 is a high-severity (CVSS 7.5) Cross-site Scripting (XSS) vulnerability in org.apache.jspwiki:jspwiki-main. A fix is available for org.apache.jspwiki:jspwiki-main — see the affected versions and patch details below.
Apache JSPWiki: Cross-Site Scripting (XSS) in JSPWiki Header Link processing
Exploitation Status
No confirmed exploitation observed yet
- CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for CVE-2025-24853.
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
How urgent is this, really
CVE-2025-24853 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 378,567 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
org.apache.jspwiki:jspwiki-main☕org.apache.jspwiki:jspwiki-markdownReal-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
A carefully crafted request when creating a header link using the wiki markup syntax, which could allow the attacker to execute javascript in the victim's browser and get some sensitive information about the victim.
Further research by the JSPWiki team showed that the markdown parser allowed this kind of attack too.
Apache JSPWiki users should upgrade to 2.12.3 or later.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | org.apache.jspwiki:jspwiki-main | all versions | 2.12.3org.apache.jspwiki:jspwiki-main:2.12.3 |
| ☕Maven | org.apache.jspwiki:jspwiki-markdown | all versions | 2.12.3org.apache.jspwiki:jspwiki-markdown:2.12.3 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.apache.jspwiki:jspwiki-main, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.apache.jspwiki:jspwiki-main to 2.12.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-24853 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.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2025-24853 can be triaged on real exposure rather than presence alone.
Tailored to CVE-2025-24853. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2025-24853 in your dependencies?
O3 Security finds CVE-2025-24853 across Maven dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.