Skip to content
Fencer Vulns
medium 5.4

CVE-2021-3012 json

A cross-site scripting (XSS) vulnerability in the Document Link of documents in ESRI Enterprise before 10.9 allows remote authenticated use…

published 2021-04-08 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-26366

cvss
5.4
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 52%
public exploits
0
none known

Summary

A cross-site scripting (XSS) vulnerability in the Document Link of documents in ESRI Enterprise before 10.9 allows remote authenticated users to inject arbitrary JavaScript code via a malicious HTML attribute such as onerror (in the URL field of the Parameters tab).

Patch / fix

  • esri arcgis_enterprise 10.9

Exploit prediction

0.69% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • blog.bssi.fr https://blog.bssi.fr/cve-2021-3012-vulnerability-allowing-remote-html-javascript-code-injection-on-esri-arcgis-products/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 3.5 AV:N/AC:M/Au:S/C:N/I:P/A:N

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.