CVE-2020-6817
HIGH
7.5
CVSS Score
Published: February 16, 2023 at 12:00 AM UTC
Updated: June 17, 2026 at 03:23 AM UTC
1 product affected across 1 vendorBleach
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Severity
HIGH7.5
Exploit prediction
EPSS 0.7%
SSVC
PoC
Description
bleach.clean behavior parsing style attributes could result in a regular expression denial of service (ReDoS). Calls to bleach.clean with an allowed tag with an allowed style attribute are vulnerable to ReDoS. For example, bleach.clean(..., attributes={'a': ['style']}).
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (2)
Vendor Advisory
Source: [email protected]
https://github.com/mozilla/bleach/security/advisories/GHSA-vqhp-cxgc-6wmmSSVC — Action Prioritization
SSVCPoCAutomatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
7.5HIGHCISA-ADP
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-1333
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