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aiohttp: Unread Compressed Request Bodies Bypass client_max_size During Cleanup

🗓️ 15 Jun 2026 20:09:51Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 61 Views

Aiohttp cleanup can decompress unread compressed bodies into memory, bypassing client_max_size.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-54278
22 Jun 202616:38
–attackerkb
bdu_fstec
BDU FSTEC
Aiohttp HTTP Client DoS
9 Oct 202600:00
–bdu_fstec
cgr
Chainguard
CVE-2026-54278 vulnerabilities
16 Jun 202620:22
–cgr
cve
CVE
CVE-2026-54278
22 Jun 202616:38
–cve
cvelist
Cvelist
CVE-2026-54278 AIOHTTP: Unread Compressed Request Bodies Bypass client_max_size During Cleanup
22 Jun 202616:38
–cvelist
debiancve
Debian CVE
CVE-2026-54278
22 Jun 202616:38
–debiancve
euvd
EUVD
EUVD-2026-38315
22 Jun 202616:38
–euvd
mend
Mend
CVE-2026-54278
22 Jun 202616:38
–mend
nvd
NVD
CVE-2026-54278
22 Jun 202618:16
–nvd
nessus
Tenable Nessus
openSUSE 16 Security Update : python-aiohttp (openSUSE-SU-2026:21372-1)
22 Jul 202600:00
–nessus
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Vulners
Node
aiohttpaiohttpRange≤3.14.0pip

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15 Jun 2026 20:09Current
7.3High risk
Vulners AI Score7.3
CVSS 3.17.5
CVSS 48.7
EPSS0.00493
SSVC
61