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CVE-2020-28208

33
FAUCET Score

CVE-2020-28208 is an email address enumeration vulnerability affecting Rocket.Chat versions through 3.9.1, residing within its password reset function. Rated Medium severity (CVSS 5.3), this vulnerability allows an unauthenticated attacker to determine valid email addresses without user interaction, leading to information disclosure. While not actively exploited (KEV: No) and lacking Metasploit/ExploitDB modules, Nuclei templates exist, and it has a high FAUCET Risk Score despite minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.9.1CPE matchmatch criteria
cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
10.41%
Probability of exploitation in next 30 days
EPSS Percentile
95.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
Nuclei: CVE-2020-28208 · Mar 29, 2021
This CVE's current EPSS score of 0.1041 is in the 94th percentile among its peer group of 23,701 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

packetstormsecurity.com / files/160845/Rocket.Chat-3.7.1-Email-Address-Enumeration.html
ExploitThird Party AdvisoryVDB Entry
seclists.org / fulldisclosure/2021/Jan/32
Broken LinkMailing ListThird Party Advisory
seclists.org / fulldisclosure/2021/Jan/43
Broken LinkMailing ListThird Party Advisory
trovent.github.io / security-advisories/TRSA-2010-01/TRSA-2010-01.txt
ExploitThird Party Advisory
trovent.io / security-advisory-2010-01
ExploitThird Party Advisory
openwall.com / lists/oss-security/2021/01/07/1
ExploitMailing ListThird Party Advisory
openwall.com / lists/oss-security/2021/01/08/1
ExploitMailing ListThird Party Advisory
openwall.com / lists/oss-security/2021/01/13/1
ExploitMailing ListThird Party Advisory