CVE-2021-42010
CVE-2021-42010 is a critical-severity vulnerability in Apache Heron with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-116.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- EPSS exploit prediction: 1% (70th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-116
- Affected product: Apache Heron
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2021-42010?
- 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.
- How severe is CVE-2021-42010?
- CVE-2021-42010 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-42010 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-42010?
- CVE-2021-42010 affects Apache Heron. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-42010?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2021-42010 published?
- CVE-2021-42010 was published on 2022-10-24 and last updated on 2026-06-17.
References
- http://www.openwall.com/lists/oss-security/2022/10/23/2
- https://lists.apache.org/thread/j65nwr8n7jchngwqptzh100drcr4ry2q
Affected products (1)
- cpe:2.3:a:apache:heron:*:*:*:*:*:*:*:*
More vulnerabilities in Apache Heron
- CVE-2020-1964 — Critical (CVSS 9.8): It was noticed that Apache Heron 0.20.2-incubating, Release 0.20.1-incubating, and Release v-0.20.0-incubating does not…
- CVE-2018-11789 — High (CVSS 7.5): When accessing the heron-ui webpage, people can modify the file paths outside of the current container to access any…
All CVEs affecting Apache Heron →
Other CWE-116 vulnerabilities
- CVE-2025-55730 — Critical (CVSS 10.0): XWiki Remote Macros provides XWiki rendering macros that are useful when migrating content from Confluence. Starting in…
- CVE-2025-55729 — Critical (CVSS 10.0): XWiki Remote Macros provides XWiki rendering macros that are useful when migrating content from Confluence. Starting in…
- CVE-2023-47143 — Critical (CVSS 10.0): IBM Tivoli Application Dependency Discovery Manager 7.3.0.0 through 7.3.0.10 is vulnerable to HTTP header injection,…
- CVE-2023-26472 — Critical (CVSS 9.9): XWiki Platform is a generic wiki platform. Starting in version 6.2-milestone-1, one can execute any wiki content with…
- CVE-2022-41934 — Critical (CVSS 9.9): XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Any user with…
- CVE-2022-36100 — Critical (CVSS 9.9): XWiki Platform Applications Tag and XWiki Platform Tag UI are tag applications for XWiki, a generic wiki platform.…