CVE-2016-10073
HighPublic exploitThe 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.
Published May 23, 2017 · Updated May 12, 2026
Key Facts
Patch immediately- CVE-2016-10073 is a high-severity vulnerability (CVSS 7.5 v3) affecting Vanilla (Vanillaforums).
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 84% probability of exploitation in the next 30 days.
- Fixed versions are available, including Vanilla 2.3.0.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v3
7.5
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS (30-day exploit likelihood)
84%
Higher than 99.6% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2016-10073 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
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.
Affected Products
1 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| VanillaVanillaforums | See advisory | 2.3.0 |
Patched Releases
Vanilla
2.3.0
Timeline
Publicly disclosed
May 23, 2017
Last updated
May 12, 2026
Weakness Type
- CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
References
- patchhttps://open.vanillaforums.com/discussion/33498/critical-security-release-vanilla-2-3-1
- exploithttp://packetstormsecurity.com/files/142486/Vanilla-Forums-2.3-Remote-Code-Execution.html
- exploithttps://exploitbox.io/vuln/Vanilla-Forums-Exploit-Host-Header-Injection-CVE-2016-10073-0day.html
- exploitExploitDB-41996
- exploit41996
FAQ
Common Questions.
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.
Affected: Vanilla (Vanillaforums). The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Vanilla 2.3.0.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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