CVE-2021-22553
CVE-2021-22553 is a medium-severity vulnerability in Google Gerrit with a CVSS 3.x base score of 6.5. 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-772.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- CVSS v2: 5.0
- EPSS exploit prediction: 0% (28th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-772
- Affected product: Google Gerrit
- Published:
- Last modified:
Description
Any git operation is passed through Jetty and a session is created. No expiry is set for the session and Jetty does not automatically dispose of the session. Over multiple git actions, this can lead to a heap memory exhaustion for Gerrit servers. We recommend upgrading Gerrit to any of the versions listed above.
Frequently asked questions
- What is CVE-2021-22553?
- Any git operation is passed through Jetty and a session is created. No expiry is set for the session and Jetty does not automatically dispose of the session. Over multiple git actions, this can lead to a heap memory exhaustion for Gerrit servers. We recommend upgrading Gerrit to any of the versions listed above.
- How severe is CVE-2021-22553?
- CVE-2021-22553 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2021-22553 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-22553?
- CVE-2021-22553 affects Google Gerrit. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-22553?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-22553 published?
- CVE-2021-22553 was published on 2021-02-17 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:google:gerrit:*:*:*:*:*:*:*:*
More vulnerabilities in Google Gerrit
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- CVE-2020-8920 — Low (CVSS 3.5): An information leak vulnerability exists in Gerrit versions prior to 2.14.22, 2.15.21, 2.16.25, 3.0.15, 3.1.10, 3.2.5…
- CVE-2020-8919 — Low (CVSS 3.5): An information leak vulnerability exists in Gerrit versions prior to 2.15.21, 2.16.25, 3.0.15, 3.1.10, 3.2.5 where a…
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Other CWE-772 vulnerabilities
- CVE-2020-12134 — Critical (CVSS 9.8): Nanometrics Centaur through 4.3.23 and TitanSMA through 4.2.20 mishandle access control for the syslog log.
- CVE-2017-15032 — Critical (CVSS 9.8): ImageMagick version 7.0.7-2 contains a memory leak in ReadYCBCRImage in coders/ycbcr.c.
- CVE-2017-14138 — Critical (CVSS 9.8): ImageMagick 7.0.6-5 has a memory leak vulnerability in ReadWEBPImage in coders/webp.c because memory is not freed in…
- CVE-2017-11641 — Critical (CVSS 9.8): GraphicsMagick 1.3.26 has a Memory Leak in the PersistCache function in magick/pixel_cache.c during writing of Magick…
- CVE-2020-14339 — High (CVSS 8.8): A flaw was found in libvirt, where it leaked a file descriptor for `/dev/mapper/control` into the QEMU process. This…
- CVE-2018-19760 — High (CVSS 8.8): cfg_init in confuse.c in libConfuse 3.2.2 has a memory leak.