High severity · published Jan 11, 2021
CVE-2020-17508
The ATS ESI plugin has a memory disclosure vulnerability
7.5
CVSS
2%
EPSS
No
On KEV
Description
The ATS ESI plugin has a memory disclosure vulnerability. If you are running the plugin please upgrade. Apache Traffic Server versions 7.0.0 to 7.1.11 and 8.0.0 to 8.1.0 are affected.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.0% · higher than 81% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TS
Traffic Server · Apache
6.0.0 through 6.2.3; 7.0.0 through 7.1.11; 8.0.0 through 8.1.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-17508
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-17508
Mailing List
https://lists.apache.org/thread.html/r65434f7acca3aebf81b0588587149c893fe9f8f9f159eaa7364a70ff%40%3Cannounce.trafficserver.apache.org%3E
More from Traffic Server
10.0
CVE-2026-58162
Apache Traffic Server: Certifier plugin trusts client SNI when generating certificates
10.0
CVE-2026-58150
Apache Traffic Server: HTTP/2 requests with Transfer-Encoding are not rejected, allowing request smuggling
10.0
CVE-2026-57834
Apache Traffic Server: Malformed chunked message body allows request smuggling
9.8
CVE-2026-58185
Apache Traffic Server: Use-after-free in the intercept plugin
9.8
CVE-2026-58179
Apache Traffic Server: regex_remap plugin overflows the stack from attacker input