CVE-2024-49770
CVE-2024-49770 is a high-severity vulnerability with a CVSS 4.0 base score of 7.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.
Key facts
- Severity: High (CVSS 4.0 base score 7.7)
- EPSS exploit prediction: 1% (48th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2024-3301
- Weakness: CWE-22
- Published:
- Last modified:
Description
`oak` is a middleware framework for Deno's native HTTP server, Deno Deploy, Node.js 16.5 and later, Cloudflare Workers and Bun. By default `oak` does not allow transferring of hidden files with `Context.send` API. However, prior to version 17.1.3, this can be bypassed by encoding `/` as its URL encoded form `%2F`. For an attacker this has potential to read sensitive user data or to gain access to server secrets. Version 17.1.3 fixes the issue.
Frequently asked questions
- What is CVE-2024-49770?
- `oak` is a middleware framework for Deno's native HTTP server, Deno Deploy, Node.js 16.5 and later, Cloudflare Workers and Bun. By default `oak` does not allow transferring of hidden files with `Context.send` API. However, prior to version 17.1.3, this can be bypassed by encoding `/` as its URL encoded form `%2F`. For an attacker this has potential to read sensitive user data or to gain access to server secrets. Version 17.1.3 fixes the issue.
- How severe is CVE-2024-49770?
- CVE-2024-49770 has a CVSS 4.0 base score of 7.7, rated high severity.
- Is CVE-2024-49770 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2024-49770?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2024-49770 have an EU (EUVD) identifier?
- Yes. CVE-2024-49770 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-3301.
- When was CVE-2024-49770 published?
- CVE-2024-49770 was published on 2024-11-01 and last updated on 2026-06-17.
References
- https://github.com/oakserver/oak/blob/3896fe568b25ac0b4c5afbf822ff8344c3d1712a/send.ts#L117-L125
- https://github.com/oakserver/oak/blob/3896fe568b25ac0b4c5afbf822ff8344c3d1712a/send.ts#L182C10-L182C25
- https://github.com/oakserver/oak/commit/4b2f27efd5cba5a45b2c3982e610da3af0869209
- https://github.com/oakserver/oak/security/advisories/GHSA-qm92-93fv-vh7m
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