CVE-2021-20080
CVE-2021-20080 is a Cross-site Scripting (XSS) vulnerability. 1 public exploit reference exists, so weaponization risk is real. No vendor fix is recorded yet; mitigation options are listed below.
Insufficient output sanitization in ManageEngine ServiceDesk Plus before version 11200 and ManageEngine AssetExplorer before version 6800 allows a remote, unauthenticated attacker to…
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.
Description
Insufficient output sanitization in ManageEngine ServiceDesk Plus before version 11200 and ManageEngine AssetExplorer before version 6800 allows a remote, unauthenticated attacker to conduct persistent cross-site scripting (XSS) attacks by uploading a crafted XML asset file.
Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
Detection & mitigation playbook
VulnerabilityDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for the affected component, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Remediation status
No patched version of the affected component has shipped for CVE-2021-20080 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.
Mitigate without a patch
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-2021-20080 can be triaged on real exposure rather than presence alone.
Tailored to CVE-2021-20080. 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-2021-20080 in your dependencies?
O3 Security finds CVE-2021-20080 across dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.