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Vulnerability details: VCID-kc4y-3rrv-77h4
Vulnerability ID VCID-kc4y-3rrv-77h4
Aliases CVE-2026-47265
GHSA-hg6j-4rv6-33pg
Summary python-aiohttp: AIOHTTP: Information disclosure via improper handling of cookies during cross-origin redirects
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-201 Insertion of Sensitive Information Into Sent Data
CWE-346 Origin Validation Error
System Score Found at
cvssv3 6.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-47265.json
epss 0.00019 https://api.first.org/data/v1/epss?cve=CVE-2026-47265
cvssv3.1 5.3 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-hg6j-4rv6-33pg
cvssv4 6.6 https://github.com/aio-libs/aiohttp
generic_textual MODERATE https://github.com/aio-libs/aiohttp
cvssv4 6.6 https://github.com/aio-libs/aiohttp/commit/f54c40851b0d6c4bbdab97ba518a223adda32478
generic_textual MODERATE https://github.com/aio-libs/aiohttp/commit/f54c40851b0d6c4bbdab97ba518a223adda32478
ssvc Track https://github.com/aio-libs/aiohttp/commit/f54c40851b0d6c4bbdab97ba518a223adda32478
cvssv3.1_qr MODERATE https://github.com/aio-libs/aiohttp/security/advisories/GHSA-hg6j-4rv6-33pg
cvssv4 6.6 https://github.com/aio-libs/aiohttp/security/advisories/GHSA-hg6j-4rv6-33pg
generic_textual MODERATE https://github.com/aio-libs/aiohttp/security/advisories/GHSA-hg6j-4rv6-33pg
ssvc Track https://github.com/aio-libs/aiohttp/security/advisories/GHSA-hg6j-4rv6-33pg
cvssv4 6.6 https://nvd.nist.gov/vuln/detail/CVE-2026-47265
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2026-47265
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-47265.json
https://api.first.org/data/v1/epss?cve=CVE-2026-47265
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-47265
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://github.com/aio-libs/aiohttp
https://github.com/aio-libs/aiohttp/commit/f54c40851b0d6c4bbdab97ba518a223adda32478
https://github.com/aio-libs/aiohttp/security/advisories/GHSA-hg6j-4rv6-33pg
https://nvd.nist.gov/vuln/detail/CVE-2026-47265
1138780 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1138780
2484127 https://bugzilla.redhat.com/show_bug.cgi?id=2484127
GHSA-hg6j-4rv6-33pg https://github.com/advisories/GHSA-hg6j-4rv6-33pg
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-47265.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U Found at https://github.com/aio-libs/aiohttp
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U Found at https://github.com/aio-libs/aiohttp/commit/f54c40851b0d6c4bbdab97ba518a223adda32478
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-06-03T12:48:46Z/ Found at https://github.com/aio-libs/aiohttp/commit/f54c40851b0d6c4bbdab97ba518a223adda32478
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U Found at https://github.com/aio-libs/aiohttp/security/advisories/GHSA-hg6j-4rv6-33pg
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-06-03T12:48:46Z/ Found at https://github.com/aio-libs/aiohttp/security/advisories/GHSA-hg6j-4rv6-33pg
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U Found at https://nvd.nist.gov/vuln/detail/CVE-2026-47265
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.05378
EPSS Score 0.00019
Published At June 5, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-04T16:28:08.922774+00:00 RedHat Importer Import https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-47265.json 38.6.0