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Fencer Intel
medium 5.3

CVE-2020-28208 json

An email address enumeration vulnerability exists in the password reset function of Rocket.Chat through 3.9.1.

published 5y ago modified 4mo ago also EUVD-2020-20692

cvss
5.3
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
10.8%
EPSS 10.8% chance of exploitation in 30 days, percentile 95%
public exploits
0
none known, plus a Nuclei check

Summary

An email address enumeration vulnerability exists in the password reset function of Rocket.Chat through 3.9.1.

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Exploit prediction

10.82% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • Nuclei template Rocket.Chat <3.9.1 - Information Disclosure nuclei detection template
  • trovent.io https://trovent.io/security-advisory-2010-01 referenced PoC, tagged "exploit" by a source, unverified
  • openwall.com http://www.openwall.com/lists/oss-security/2021/01/07/1 referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/160845/Rocket.Chat-3.7.1-Email-Address-Enumeration.html referenced PoC, tagged "exploit" by a source, unverified
  • openwall.com http://www.openwall.com/lists/oss-security/2021/01/08/1 referenced PoC, tagged "exploit" by a source, unverified
  • trovent.github.io https://trovent.github.io/security-advisories/TRSA-2010-01/TRSA-2010-01.txt referenced PoC, tagged "exploit" by a source, unverified
  • openwall.com http://www.openwall.com/lists/oss-security/2021/01/13/1 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness

References

Sources

Fencer Intel 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.