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CVE-2026-45820: fflate through 0.8.2 (inclusive), 0.4.5 through 0.4.8, 0.5.0 through 0.5.3, 0.6.0 through 0.6.10, 0.7.0 through 0.7.4…
CVE-2026-45820. CVSS 3.1 base score 7.5 (HIGH, NVD). EPSS 0.00279 (percentile 0.19335), scored 24-Oct-2026.
Affected technology
fflate · through 0.8.2 (inclusive)
101arrowz
fflate · 0.4.5 through 0.4.8, 0.5.0 through 0.5.3, 0.6.0 through 0.6.10, 0.7.0 through 0.7.4, 0.8.0 through 0.8.2
101arrowz
Description’s affected range: through 0.8.2
Component: Not specified by the source
Attack conditions (Source advisory, CVSS 4.0): Network (remote) · No privileges required · No user interaction required
What an attacker can do
Source advisory’s CVSS 4.0 assessment (base score 6.6/10) rates confidentiality and integrity impact as none; availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.
- CWE
- CWE-400, CWE-835
- CCR priority
- 30.1 /100 (P4)
- CVSS 3.1
- 7.5 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · NVD
- EPSS
- 0.00279 · percentile 0.19335 · 2026-10-24
- KEV
- no
Provenance
- NVD CVE API 2.0 · Source record · observed 2026-10-25 01:28:19.133527+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2026-45820.html