CVE-2021-42836
GJSON before 1.9.3 allows a ReDoS (regular expression denial of service) attack.
02 Description
GJSON before 1.9.3 allows a ReDoS (regular expression denial of service) attack.
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 2.41% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 83.8% of scored records. A rank, not a probability.
- NVD base score
- 7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2021-10-22 17:22Z5 YR AGO
- Last updated
- 2024-08-04 03:38Z2 YR AGO
- Reserved
- 2021-10-22
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-400Uncontrolled Resource ConsumptionClass
- Data version
- 5.1
- Document digest
- 643eba0c578466b54ebf3796cd63d67dbfad4d006bebcff3096579d25b1e2268
05 Affected products
06 References
- github.comhttps://github.com/tidwall/gjson/issues/236
- github.comhttps://github.com/tidwall/gjson/issues/237
- github.comhttps://github.com/tidwall/gjson/commit/77a57fda87dca6d0d7d4627d512a630f89a91c96
- github.comhttps://github.com/tidwall/gjson/compare/v1.9.2...v1.9.3
- github.comhttps://github.com/tidwall/gjson/commit/590010fdac311cc8990ef5c97448d4fec8f29944
07 Fixed in
Debian 12
- golang-github-tidwall-gjson Fixed in 1.14.4-2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- golang-github-tidwall-gjson Fixed in 1.14.4-2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- golang-github-tidwall-gjson Fixed in 1.14.4-2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- golang-github-tidwall-gjson No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 22.04 LTS
- golang-github-tidwall-gjson No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 24.04 LTS
- golang-github-tidwall-gjson No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 25.10
- golang-github-tidwall-gjson No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 26.04 LTS
- golang-github-tidwall-gjson No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 26.10
- golang-github-tidwall-gjson No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.