CVE-2026-122146
101arrowz fflate index.mjs unzipSync memory corruption
A weakness has been identified in 101arrowz fflate up to 0.8.3. This issue affects the function unzipSync of the file esm/index.mjs. This manipulation causes memory corruption. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| fflate 101arrowz |
0.8.0 (affected) 0.8.1 (affected) 0.8.2 (affected) 0.8.3 (affected) |
CNA: VulDB |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 6.9 medium |
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P | CNA: VulDB |
| 3.1 / 7.3 high |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C | CNA: VulDB |
| 3.0 / 7.3 high |
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C | CNA: VulDB |
| 2.0 / 7.5 high |
AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:C | CNA: VulDB |
Exploit evidence
- https://github.com/ictrun/java/issues/9
exploit · CNA: VulDB
References
- https://vuldb.com/vuln/431150CNA: VulDB · vdb-entry, technical-description
- https://vuldb.com/vuln/431150/ctiCNA: VulDB · signature, permissions-required
- https://vuldb.com/cve/CVE-2026-122146CNA: VulDB · third-party-advisory
- https://vuldb.com/submit/1027352CNA: VulDB · third-party-advisory
- https://github.com/ictrun/java/issues/9CNA: VulDB · exploit, issue-tracking
For agents and automation
Read public disclosures for free as Markdown or JSON. Compatible browsers also expose native WebMCP tools to search disclosures, read this page, and discover API access.
Use the ontology-linked Cyber API with x402 pay per request, or a Y2 Pro or Elite API key with the intel:cyber scope.
Endpoints and access details
https://api.y2.dev/api/v2/cyber/cveshttps://api.y2.dev/api/v2/cyber/cves/{cveId}
A workspace owner or admin can create a Pro or Elite API key. Send Authorization: Bearer <Y2_API_KEY> from your trusted agent runtime.
For x402, omit Authorization and read the HTTP 402 payment challenge before signing a retry. Public browser tools do not make payments.