CVE-2026-97200

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.56% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 46.6% of scored records. A rank, not a probability.

NVD base score

8.2 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/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

NVD analysis status

Awaiting Analysis. NVD last modified this record on 2026-10-26.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-10-26 13:49Z2 DAYS AGO

Last updated

2026-10-26 15:35Z2 DAYS AGO

Reserved

2026-10-26

Assigning CNA

EEF

Record state

PUBLISHED

Severity

High (CVSS 8.2)

CNA CVSS vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Weaknesses

• CWE-409Improper Handling of Highly Compressed Data (Data Amplification)Base
• CWE-770Allocation of Resources Without Limits or ThrottlingBase

Data version

5.2

Document digest

1b5f7397d39c174569e39d35cccb57c71c923233c5f6a84928b98f7ecdf45b8e

• github.comhackney 4.9.0 release noteshttps://github.com/benoitc/hackney/releases/tag/4.9.0vendor-advisoryrelated
• cna.erlef.orgEEF CNA record for CVE-2026-97200https://cna.erlef.org/cves/CVE-2026-97200.htmlrelated
• osv.devOSV record EEF-CVE-2026-97200https://osv.dev/vulnerability/EEF-CVE-2026-97200related
• github.comCap buffered response bodies with max_body_size and bound decompression (benoitc/hackney#980)https://github.com/benoitc/hackney/pull/980related
• github.comIntroducing commit dc41b79 in benoitc/hackneyhttps://github.com/benoitc/hackney/commit/dc41b79339ca0c41e16d3f2dd17172bc2de855d6related
• github.comFix commit 493e8bf in benoitc/hackneyhttps://github.com/benoitc/hackney/commit/493e8bf83a391548e5101792276ab3fc428fa76cpatch