High severity · published Sep 18, 2026
CVE-2026-81179
SysReptor: Host header injection might allow account takeover
8.1
CVSS
0.5%
EPSS
No
On KEV
Description
SysReptor is a fully customizable pentest reporting platform. Prior to 2026.58, installations that enable password reset by email while configuring ALLOWED_HOSTS with a wildcard accept an attacker-controlled Host header when generating a password reset link. An unauthenticated attacker can request a reset email whose link points to an attacker-controlled system, and a victim who follows that link can disclose the reset token, allowing the attacker to reset the victim's password and take over the account. Exploitation also requires a configured email gateway and an email address for the victim, while some reverse proxy configurations may reject the hostile Host header. This issue is fixed in version 2026.58.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 41% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SY
sysreptor · Syslifters
< 2026.58 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-81179
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-81179
github.com
https://github.com/Syslifters/sysreptor/commit/7ecf56a6b8e5c05a2d2212bc8aa340f69855cdea
github.com
https://github.com/Syslifters/sysreptor/releases/tag/2026.58
github.com
https://github.com/Syslifters/sysreptor/security/advisories/GHSA-9x2r-5pff-8w6c
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