CVE-2021-42010: apache software foundation apache heron (incubating) Improper Encoding or Escaping of Output
CVSS: 9.8v3.1CriticalModified
AliasesGHSA-95w5-q9vp-5vrm
Published 24-10-2022Last modified 07-05-2025
Vulnerability summary
CVE-2021-42010 is a critical (CVSS 9.8) Improper Encoding or Escaping of Output vulnerability in apache software foundation apache heron (incubating). EPSS estimates a 1.58% chance of exploitation in the next 30 days, higher than 75.2% of scored vulnerabilities.
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)EPSS score
1.58%
0%100%
Low · +0.03 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 24-10-2022PublishedVulnerability first disclosed.
- 07-05-2025Last modifiedVulnerability information updated.
Description
Heron versions <= 0.20.4-incubating allows CRLF log injection because of the lack of escaping in the log statements. Please update to version 0.20.5-incubating which addresses this issue.
CVSS metrics
3 scores · 3 sources · 1 versionCritical 9.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesAll 3 agree
- OSV · MavenEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVDNIST9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
1.58%
Chance of exploitation in the next 30 days
Percentile
75%
Versus all other CVEs
30-day change
+0.03 pp
From 1.55% on 19-09-2026
19-09-202619-10-2026
EPSS score1.58%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Apache1 product
- heron< 0.20.5-incubating
Apache software foundation1 product
- apache heron (incubating)≥ Apache Heron 0.20.4-incubating, ≤ 0.20.4-incubating
Org.apache.heron1 product
- heron-api< 0.20.5-incubating
3 vendors · 3 products
