CVE-2021-23437
Regular Expression Denial of Service (ReDoS)
HIGH
7.5
CVSS Score
Published: September 3, 2021 at 04:10 PM UTC
Updated: June 17, 2026 at 03:38 AM UTC
2 products affected across 2 vendorsFedoraPillow
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Severity
HIGH7.5
Exploit prediction
EPSS 3%
Description
The package pillow 5.2.0 and before 8.3.2 are vulnerable to Regular Expression Denial of Service (ReDoS) via the getrgb function.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://github.com/python-pillow/Pillow/commit/9e08eb8f78fdfd2f476e1b20b7cf38683754866b
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RNSG6VFXTAROGF7ACYLMAZNQV4EJ6I2C/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VKRCL7KKAKOXCVD7M6WC5OKFGL4L3SJT/
- https://pillow.readthedocs.io/en/stable/releasenotes/8.3.2.html
- https://security.gentoo.org/glsa/202211-10
References (7)
PatchThird Party Advisory
Source: [email protected]
https://github.com/python-pillow/Pillow/commit/9e08eb8f78fdfd2f476e1b20b7cf38683754866bRelease NotesVendor Advisory
Source: [email protected]
https://pillow.readthedocs.io/en/stable/releasenotes/8.3.2.htmlVendor AdvisoryThird Party Advisory
Source: [email protected]
https://security.gentoo.org/glsa/202211-10ExploitPatchRelease NotesThird Party Advisory
Source: [email protected]
https://snyk.io/vuln/SNYK-PYTHON-PILLOW-1319443CVSS
7.5HIGHsnyk
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-125
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