CVE-2023-27522High· 7.5▾ TwilightAn HTTP Response Smuggling vulnerability was found in the Apache HTTP Server via mod_proxy_uwsgi. This security issue occurs when special characters in the origin response header can truncate or split the response forwarded to the client.
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · likelihood 0.4 · exploitation 0
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Exploit-prediction probability, daily snapshots since Jul 29.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
2.1%
Last analysed / modified upstream
An HTTP Response Smuggling vulnerability was found in the Apache HTTP Server via mod_proxy_uwsgi. This security issue occurs when special characters in the origin response header can truncate or split the response forwarded to the client.
httpd: mod_proxy_uwsgi HTTP response splitting — rated Moderate by Red Hat. Released 2023-03-07, updated 2026-09-21.
Affected:
Fixed:
No fix planned:
Not affected:
Before applying this update, make sure all previously released errata relevant to your system have been applied.
For details on how to apply this update, refer to:
https://access.redhat.com/articles/11258 https://access.redhat.com/errata/RHSA-2023:4629 For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://access.redhat.com/articles/11258
After installing the updated packages, the httpd daemon will be restarted automatically. https://access.redhat.com/errata/RHSA-2023:5049 For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://access.redhat.com/articles/11258
After installing the updated packages, the httpd daemon will be restarted automatically. https://access.redhat.com/errata/RHSA-2023:5050
Workarounds / mitigations:
Affected packages:
uwsgi < 2.0.22Patched in:
uwsgi 2.0.22Connected by shared product, vendor, weakness, or advisory.
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