CVE-2021-27577
Incorrect handling of url fragment leads to cache poisoning
HIGH
7.5
CVSS Score
Published: June 29, 2021 at 11:45 AM UTC
Updated: June 17, 2026 at 03:45 AM UTC
2 products affected across 2 vendorsDebian LinuxTraffic Server
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Severity
HIGH7.5
Exploit prediction
EPSS 3%
Description
Incorrect handling of url fragment vulnerability of Apache Traffic Server allows an attacker to poison the cache. This issue affects Apache Traffic Server 7.0.0 to 7.1.12, 8.0.0 to 8.1.1, 9.0.0 to 9.0.1.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v ≤ 9.0.17.0.0 ≤ v ≤ 7.1.128.0.0 ≤ v ≤ 8.1.19.0.0 ≤ v ≤ 9.0.1
Debian Linux· Debiandrupal
95%Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (2)
x_refsource_MISCMailing ListVendor Advisory
Source: [email protected]
https://lists.apache.org/thread.html/ra1a41ff92a70d25bf576d7da2590575e8ff430393a3f4a0c34de4277%40%3Cusers.trafficserver.apache.org%3EVendor Advisoryx_refsource_DEBIANThird Party Advisory
Source: [email protected]
https://www.debian.org/security/2021/dsa-4957CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- HIGH
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-444
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