CVE-2026-80206

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• 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

Not scored by EPSS

EPSS percentile

Not scored by EPSS

NVD base score

The NVD has published no score for this record

NVD CVSS vector

No NVD score to derive

NVD analysis status

Not recorded

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

2026-08-26 10:28Z3 HR AGO

Last updated

2026-08-26 12:52Z1 HR AGO

Reserved

2026-08-25

Assigning CNA

VulnCheck

Record state

PUBLISHED

Severity

High (CVSS 8.2)

CNA CVSS vector

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

Weaknesses

• CWE-1333Inefficient Regular Expression ComplexityBase

Data version

5.2

Document digest

58d41b2753de45bb405a64d4b26cd280d86a05955fd3f4ed0f6abe7fac139565

• github.comGitHub Security Advisory (GHSA-w3v8-gmh9-3wv7)https://github.com/nltk/nltk/security/advisories/GHSA-w3v8-gmh9-3wv7vendor-advisory
• www.vulncheck.comVulnCheck Advisory: NLTK 3.10.2 Regular Expression Denial of Service via tgrephttps://www.vulncheck.com/advisories/nltk-3.10.2-regular-expression-denial-of-service-via-tgrepthird-party-advisory