7.5

CVE-2021-28965: fedoraproject fedora

Modified
AliasesALPINE-CVE-2021-28965SUSE-SU-2021:1280-1UBUNTU-CVE-2021-28965
Published 21-04-2021Last modified 03-08-2024

Vulnerability summary

CVE-2021-28965 is a high (CVSS 7.5) vulnerability in fedoraproject fedora. EPSS estimates a 5.06% chance of exploitation in the next 30 days, higher than 92.3% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.5 (NVD); no exploitation reported by the 5 checked sources; EPSS 5% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
5.06%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 20 · Related 7
DSA-5066-1MGASA-2021-0579OPENSUSE-SU-2024:11310-1OPENSUSE-SU-2024:11311-1OPENSUSE-SU-2024:11786-1OPENSUSE-SU-2024:12712-1

Timeline

  1. 21-04-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

5.06%

Chance of exploitation in the next 30 days

Percentile

92%

Versus all other CVEs

30-day change

No change 0.00 pp

From 5.06% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu3 products
  • ruby2.3< 2.3.1-2~ubuntu16.04.16
  • ruby2.5< 2.5.1-1ubuntu1.9
  • ruby2.7< 2.7.0-5ubuntu1.4
Ruby-lang2 products
  • rexml< 3.2.5
  • ruby< 2.6.7 | ≥ 2.7.0, < 2.7.3 | ≥ 3.0.0, < 3.0.1
Suse2 products
  • ruby2.5&distro=SUSE Linux Enterprise Micro 5.0< 2.5.9-4.17.1
  • ruby2.5&distro=SUSE Linux Enterprise Module for Basesystem 15 SP2< 2.5.9-4.17.1
Alpine1 product
  • ruby≥ 2.7.0, < 2.5.9-r0 | ≥ 2.7.0, < 2.6.7-r0 | ≥ 2.7.0, < 2.7.3-r0
Debian1 product
  • ruby2.7< 2.7.3-1
Fedoraproject1 product
Opensuse1 product
  • ruby2.5&distro=openSUSE Leap 15.2< 2.5.9-lp152.2.6.1
RubyGems1 product
  • rexml< 3.2.5

8 vendors · 12 products

References

28 links
Show all 28 references