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Fencer Intel
high 7.5

CVE-2016-10073 in the critical feed json

The from method in library/core/class.email.php in Vanilla Forums before 2.3.1 allows remote attackers to spoof the email domain in sent me…

published 2017-05-23 9 y ago modified 2026-06-17 4 mo ago also EUVD-2016-1267

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
83.6%
EPSS 83.6% chance of exploitation in 30 days, percentile 99.6%
public exploits
2
Metasploit, Exploit-DB

Summary

The from method in library/core/class.email.php in Vanilla Forums before 2.3.1 allows remote attackers to spoof the email domain in sent messages and potentially obtain sensitive information via a crafted HTTP Host header, as demonstrated by a password reset request.

Patch / fix

Timeline

  1. First public exploit (EDB-41996)
  2. Published

Exploit prediction

83.61% chance of exploitation in the next 30 days, higher than 99.6% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • Metasploit auxiliary/scanner/http/host_header_injection HTTP Host Header Injection Detection metasploit auxiliary, normal rank
  • EDB-41996 Vanilla Forums < 2.3 - Remote Code Execution remote, 2017-05-11
  • packetstormsecurity.com http://packetstormsecurity.com/files/142486/Vanilla-Forums-2.3-Remote-Code-Execution.html referenced PoC, tagged "exploit" by a source, unverified
  • exploitbox.io https://exploitbox.io/vuln/Vanilla-Forums-Exploit-Host-Header-Injection-CVE-2016-10073-0day.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.