CVE-2026-47265

HIGHNVD 7.57.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.1% (4th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3

Also known asEUVD-2026-34007 (ENISA EUVD) · GHSA-hg6j-4rv6-33pg (GitHub Security Advisories)Source: ENISA EUVD

7.5EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.14.0, cookies set with the cookies parameter on requests are sent after following a cross-origin redirect. If a developer uses the cookies parameter on a per-request basis then sensitive data might be leaked to an attacker if they manage to control a redirect. Version 3.14.0 patches the issue. If unable to upgrade, using a Cookie header in the headers parameter is not vulnerable.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
49
EG Risk 49/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity75% × 45%
Impact severity (EG Severity): CVSS 7.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.1% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.1%
EPSS %ILE
4th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.5): severity, escalated by confirmed exploitation. This CVE's 7.5 is its impact severity (EG Severity), not escalated.

EG Severity
7.5 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
0.1% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-30). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

June 2, 2026

Last Modified

July 21, 2026

Advisory Details (2)

Auto-updated Jun 10, 2026
Patch available. Sources: github_commit, github.
GitHub advisoryMentions a patch (unverified)

Cross-origin redirect with per-request cookies · Advisory · aio-libs/aiohttp · GitHub

https://github.com/aio-libs/aiohttp/security/advisories/GHSA-hg6j-4rv6-33pg
GitHub commit

commit f54c40851b0d (aio-libs/aiohttp)

Fix landed in aio-libs/aiohttp commit f54c40851b0d — awaiting tagged release

https://github.com/aio-libs/aiohttp/commit/f54c40851b0d6c4bbdab97ba518a223adda32478

Vendor Advisories for CVE-2026-47265(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
python-aiohttp3.10.0-1 ... 3.9.5-1 (41 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
python-aiohttp3.10.0-1 ... 3.9.5-1 (34 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
python-aiohttp3.11.16-1 ... 3.14.3-1 (16 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
python-aiohttp3.11.16-1 ... 3.13.5-1 (8 versions)
  • every version up to 3.14.0-1: fixed in 3.14.0-1
—
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
aiohttp0.1 ... 3.9.5 (306 versions)
  • every version up to 3.14.0: fixed in 3.14.0
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 38× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 181 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 81 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-31 01:54 UTCEG score recompute
  2. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  3. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  4. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  5. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  6. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  7. 2026-10-25 14:24 UTCEG score recompute
  8. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  9. 2026-10-24 07:23 UTCEG score recompute
  10. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  11. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  12. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  13. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  14. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  15. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  16. 2026-10-18 03:36 UTCEG score recompute
  17. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  18. 2026-10-17 12:52 UTCEG score recompute
  19. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  20. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  21. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  22. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  23. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  24. 2026-10-12 16:02 UTCEG score recompute
  25. 2026-10-11 19:44 UTCEG score recompute
Show 75 more
  1. 2026-10-11 16:59 UTCEG score recompute
  2. 2026-10-11 14:24 UTCEG score recompute
  3. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  4. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  5. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  6. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  7. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  8. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  9. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  10. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  11. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  12. 2026-10-03 12:39 UTCOSV refresh
  13. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  14. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  15. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  16. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  17. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  18. 2026-09-26 00:27 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  19. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  20. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  21. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  22. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  23. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  24. 2026-09-14 05:42 UTCEG score recompute
  25. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  26. 2026-09-13 00:06 UTCOSV refresh
  27. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  28. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  29. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  30. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  31. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  32. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  33. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  34. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  35. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  36. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  37. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  38. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  39. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  40. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  41. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  42. 2026-08-25 03:44 UTCEG score recompute
  43. 2026-08-23 13:40 UTCEG score recompute
  44. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  45. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  46. 2026-08-20 23:11 UTCEG score recompute
  47. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  48. 2026-08-20 10:09 UTCEG score recompute
  49. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  50. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  51. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  52. 2026-08-16 16:22 UTCEG score recompute
  53. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  54. 2026-08-16 03:38 UTCEG score recompute
  55. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  56. 2026-08-15 14:57 UTCEG score recompute
  57. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  58. 2026-08-13 23:15 UTCEG score recompute
  59. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  60. 2026-08-12 21:23 UTCEG score recompute
  61. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  62. 2026-08-11 16:19 UTCEG score recompute
  63. 2026-08-11 03:36 UTCEG score recompute
  64. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  65. 2026-08-10 02:09 UTCEG score recompute
  66. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  67. 2026-08-09 00:46 UTCEG score recompute
  68. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  69. 2026-08-06 21:59 UTCEG score recompute
  70. 2026-08-06 13:47 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  71. 2026-08-05 20:35 UTCEG score recompute
  72. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  73. 2026-08-04 19:50 UTCEG score recompute
  74. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  75. 2026-08-04 10:39 UTCEPSS rescoreEPSS 0.1% · 4th percentile

Frequently asked(5)

What is CVE-2026-47265?
CVE-2026-47265 is a high-severity vulnerability; its CVE record was published on June 2, 2026. AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.14.0, cookies set with the cookies parameter on requests are sent after following a cross-origin redirect. If a developer uses the cookies parameter on a per-request basis then sensitive data might be…
When was the CVE record for CVE-2026-47265 published?
The CVE record for CVE-2026-47265 was published on June 2, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of July 21, 2026; the record at its source may have been updated since.
Is CVE-2026-47265 actively exploited?
CVE-2026-47265 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (4th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-47265?
CVE-2026-47265 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-47265?
A fix for CVE-2026-47265 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-47265 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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