CVE-2026-73552

ecs-service-connect-agent: Fixed an issue where safe_regex matching treated accepted non-UTF-8 HTTP header bytes as a non-match; in RBAC policie...

CVE-2026-73552 is fixed in ecs-service-connect-agent on 1 platform by ALAS2023-2026-2149 (version v1.39.1.0-1.amzn2023), released September 14, 2026. It is not reported as exploited. Patch Radar priority: High.

High

CVSS

n/a

important

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0049

42nd percentile

Fixed an issue where safe_regex matching treated accepted non-UTF-8 HTTP header bytes as a non-match; in RBAC policies using negative matching this could fail open and allow access to a protected resource.

Where it's fixed

Product	Fixed in	Fix	Released
Linux
ecs-service-connect-agent · amzn 2023	v1.39.1.0-1.amzn2023	ALAS2023-2026-2149	Sep 14, 2026

Patch Radar data is free to use with attribution. Terms and how to credit it.

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.