CVE-2026-58150
published 2026-07-29CVE-2026-58150: Apache Traffic Server does not reject Transfer-Encoding in HTTP/2 requests, allowing downgrade request smuggling. This issue affects Apache Traffic Server…
PriorityP267critical10CVSS 3.1
AVNACLPRNUINSCCHIHAN
EPSS
0.37%
30.5th percentile
Apache Traffic Server does not reject Transfer-Encoding in HTTP/2 requests, allowing downgrade request smuggling.
This issue affects Apache Traffic Server: from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3.
Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| apache | traffic_server | >= 10.0.0 < 10.1.4 | 10.1.4 |
| apache | traffic_server | 8.0.0 – 8.1.9 | — |
| apache | traffic_server | >= 9.0.0 < 9.2.15 | 9.2.15 |
| apache_software_foundation | apache_traffic_server | 10.0.0 – 10.1.3 | — |
| apache_software_foundation | apache_traffic_server | 8.0.0 – 8.1.9 | — |
| apache_software_foundation | apache_traffic_server | 9.0.0 – 9.2.14 | — |
CVSS provenance
nvdv3.110.0CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
nvdv4.07.8HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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VulDB
Apache Traffic Server up to 8.1.9/9.2.14/10.1.3 request smuggling (EUVD-2026-50173 / Nessus ID 333156)
vuldb·2026-08-07·CVSS 10.0
CVE-2026-58150 [CRITICAL] Apache Traffic Server up to 8.1.9/9.2.14/10.1.3 request smuggling (EUVD-2026-50173 / Nessus ID 333156)
A vulnerability described as problematic has been identified in Apache Traffic Server up to 8.1.9/9.2.14/10.1.3. Affected by this issue is some unknown functionality. Executing a manipulation can lead to http request smuggling.
This vulnerability appears as CVE-2026-58150. The attack may be performed from remote. There is no available exploit.
Upgrading the affected component is recommended.
GHSA
Apache Traffic Server does not reject Transfer-Encoding in HTTP/2 requests, allowing downgrade request smuggling.
ghsa_unreviewed·2026-07-29
CVE-2026-58150 [HIGH] CWE-444 Apache Traffic Server does not reject Transfer-Encoding in HTTP/2 requests, allowing downgrade request smuggling.
Apache Traffic Server does not reject Transfer-Encoding in HTTP/2 requests, allowing downgrade request smuggling.
This issue affects Apache Traffic Server: from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3.
Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-58150 trafficserver: HTTP/2 requests with Transfer-Encoding are not rejected, allowing request smuggling [epel-all]
bugzilla·2026-07-29·CVSS 10.0
CVE-2026-58150 [CRITICAL] CVE-2026-58150 trafficserver: HTTP/2 requests with Transfer-Encoding are not rejected, allowing request smuggling [epel-all]
CVE-2026-58150 trafficserver: HTTP/2 requests with Transfer-Encoding are not rejected, allowing request smuggling [epel-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Apache Traffic Server does not reject Transfer-Encoding in HTTP/2 requests, allowing downgrade request smuggling.
This issue affects Apache Traffic Server: from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3.
Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.
Bugzilla
CVE-2026-58150 trafficserver: HTTP/2 requests with Transfer-Encoding are not rejected, allowing request smuggling [fedora-all]
bugzilla·2026-07-29·CVSS 10.0
CVE-2026-58150 [CRITICAL] CVE-2026-58150 trafficserver: HTTP/2 requests with Transfer-Encoding are not rejected, allowing request smuggling [fedora-all]
CVE-2026-58150 trafficserver: HTTP/2 requests with Transfer-Encoding are not rejected, allowing request smuggling [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Apache Traffic Server does not reject Transfer-Encoding in HTTP/2 requests, allowing downgrade request smuggling.
This issue affects Apache Traffic Server: from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3.
Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.
Bugzilla
CVE-2026-58150 Apache Traffic Server: HTTP/2 requests with Transfer-Encoding are not rejected, allowing request smuggling
bugzilla·2026-07-29·CVSS 10.0
CVE-2026-58150 [CRITICAL] CVE-2026-58150 Apache Traffic Server: HTTP/2 requests with Transfer-Encoding are not rejected, allowing request smuggling
CVE-2026-58150 Apache Traffic Server: HTTP/2 requests with Transfer-Encoding are not rejected, allowing request smuggling
Apache Traffic Server does not reject Transfer-Encoding in HTTP/2 requests, allowing downgrade request smuggling.
This issue affects Apache Traffic Server: from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3.
Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.
2026-07-29
Published