CVE-2026-54280: aio-libs aiohttp Improper Resource Shutdown or Release
CVSS: 7.5v3.1HighAnalyzed
AliasesGHSA-9x8q-7h8h-wcw9PYSEC-2026-2113UBUNTU-CVE-2026-54280DEBIAN-CVE-2026-54280CGA-22h2-fpcf-j5x4CGA-24vm-grjh-4crhCGA-5cfm-35hc-4p8hCGA-873w-q267-f7xjCGA-fm9q-c66q-f49rCGA-h58j-4398-fwwgCGA-mf9r-2cvf-7fhrCGA-q68h-6qwv-r35jCGA-v99x-6x4r-8j28CGA-w9rm-3x95-6q8mCGA-339p-93gw-wf4wCGA-372j-rfm7-6xh3CGA-4642-8f2f-rgccCGA-4jrf-r4cr-w9j4CGA-557v-9px8-wmvfCGA-579g-4f9f-78c7CGA-67pj-ppp7-9w44CGA-73pf-35fr-rg6vCGA-7995-gggv-hpxxCGA-7f92-944r-52xrCGA-7ggh-cv32-6mr4CGA-867p-c3j3-h2q4CGA-8hm2-429q-h9w8CGA-8p6v-m3qm-459wCGA-8rwc-r3fp-3q52CGA-92p9-r9jf-hh3qCGA-9cq4-h427-7ffjCGA-9fmm-3rhw-2mmvCGA-9p3m-wphj-3x83CGA-9p8f-mjx6-9qq7CGA-cmpv-fh2r-vxmvCGA-cwr8-7prx-vm37CGA-f2qf-mfc2-px63CGA-fj5j-gvgr-qjrxCGA-fxfr-6c9w-xw5mCGA-g7r2-92rj-3g87CGA-gg3r-48fq-x75qCGA-gq97-mh9g-f8p9CGA-gv2p-phc5-6v5gCGA-hgj8-9mvh-cw4qCGA-hhfp-82m2-2m5mCGA-hr38-3q6v-4ghcCGA-m57h-hcxv-7p5mCGA-m8fw-hg8x-5q33CGA-mcjr-x85j-vxrvCGA-mjh2-5xpv-xwm2CGA-mqmq-ff55-4vm7CGA-mv2c-f3gg-48p4CGA-p39g-rx65-c52jCGA-p92c-87gx-v75jCGA-p99j-g258-x4qvCGA-p9p6-23xm-2m59CGA-pvp7-7m7j-x9v3CGA-q657-f4c9-7rfwCGA-q74c-pm9m-3p67CGA-rcw6-vhh8-p4r9CGA-xp3x-qw3r-w7gv
Published 22-06-2026Last modified 22-06-2026
Vulnerability summary
CVE-2026-54280 is a high (CVSS 7.5) Improper Resource Shutdown or Release vulnerability in aio-libs aiohttp. EPSS estimates a 0.46% chance of exploitation in the next 30 days, higher than 38.6% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.1 (NVD)EPSS score
0.46%
0%100%
Low · +0.18 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 4 · Related 5Timeline
- 22-06-2026PublishedVulnerability first disclosed.
- 22-06-2026Last modifiedVulnerability information updated.
Description
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, payload resources are not closed correctly when a client disconnects in the middle of a write. If a payload is using an open file or similar limited resource, then an attacker may be able to cause resource starvation temporarily until garbage collection or similar closes the file. This vulnerability is fixed in 3.14.1.
CVSS metrics
9 scores · 7 sources · 2 versionsLow 1.7Preferred score · CVE.org (CNA)
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:USources5 sources · 1.7–6.3
- OSV · UbuntuEcosystem advisory · calculated6.3MediumCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:UDiffers
- OSV · WolfiEcosystem advisory · calculated6.3MediumCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:UDiffers
- OSV · ChainguardEcosystem advisory · calculated6.3MediumCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:UDiffers
- NVDNIST1.7LowCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/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
High 7.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesAll 4 agree
- OSV · PypiEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.46%
Chance of exploitation in the next 30 days
Percentile
39%
Versus all other CVEs
30-day change
+0.18 pp
From 0.28% on 20-09-2026
20-09-202620-10-2026
EPSS score0.46%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Chainguard31 products
- airflow-2All versions (No fix recorded)
- airflow-3< 3.3.1-r0 | < 3.2.2-r7
- airflow-3-iamguarded-compatAll versions (No fix recorded)
- airflow-core-2< 2.11.2-r6
- apache-beam-python-3.11-sdk< 2.74.0-r3
Wolfi4 products
- airflow-3< 3.3.1-r0 | < 3.2.2-r7
- airflow-3-iamguarded-compatAll versions (No fix recorded)
- mlflow< 3.16.0-r0 | < 3.13.0-r1
- open-webui< 0.9.6-r5
Aio-libs1 product
- aiohttp< 3.14.1
Aiohttp1 product
- aiohttp≥ 3.12.1, < 3.14.1
Debian1 product
- python-aiohttpAll versions (No fix recorded) | < 3.14.1-1
PyPI1 product
- aiohttp< 3.14.1
Ubuntu1 product
- python-aiohttpAll versions (No fix recorded)
7 vendors · 40 products
References
8 links- github.com/aio-libs/aiohttp/security/advisories/GHSA-9x8q-7h8h-wcw9X Refsource CONFIRMWEBAdvisoryREPORTThird Party Advisory
- github.com/aio-libs/aiohttp/commit/a762eda5242f6490d6ba667533193f8b473ad587X Refsource MISCWEBFIXPatch
- github.com/aio-libs/aiohttpPACKAGE
