THREATPORT/VULNERABILITY/CVE-2021-28965
HIGH SEVERITY

CVE-2021-28965

Rexml vulnerability

CVSS
7.5
EPSS
5.1%
EPSS pct
91th
Exploited
No known
The REXML gem before 3.2.5 in Ruby before 2.6.7, 2.7.x before 2.7.3, and 3.x before 3.0.1 does not properly address XML round-trip issues. An incorrect document can be produced after parsing and serializing.
Affected vendor
Ruby Lang
Affected product
Rexml
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Published
2021-04-21

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to integrity.

Its EPSS score of 5.1% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 91% of all scored CVEs.

Check your external exposure to CVE-2021-28965

  • Confirm whether Ruby Lang Rexml is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2021-28965.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-28965

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