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VulnerabilityPublished Updated

CVE-2024-43799: send vulnerable to template injection that can lead to XSS

Affects sendSource GCVE Database

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Authoritative record:CVE-2024-43799· Medium 5.0

Not known to be exploited · CVSS 5.0 Medium : upgrade to 0.19.0 when convenient.

Data as of 29 Oct 2026, 22:52 UTC

CVSS 3.1 base score
5.0Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (GitHub_M)CVSS 3.15.0
Patch
Available – fixed in 0.19.0
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 10 Sep 2024

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Upgrade send to 0.19.0.

Affected software

ProductAffectedFixed in
npmsendAffected
  • <0.19.0
Fixed in
  • 0.19.0

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

Description

### Impact passing untrusted user input - even after sanitizing it - to `SendStream.redirect()` may execute untrusted code ### Patches this issue is patched in send 0.19.0 ### Workarounds users are encouraged to upgrade to the patched version of express, but otherwise can workaround this issue by making sure any untrusted inputs are safe, ideally by validating them against an explicit allowlist ### Details successful exploitation of this vector requires the following: 1. The attacker MUST control the input to response.redirect() 1. express MUST NOT redirect before the template appears 1. the browser MUST NOT complete redirection before: 1. the user MUST click on the link in the template

References

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