CVE-2021-25994
Userfrosting - Host-Header Injection Leads to Account Takeover
In Userfrosting, versions v0.3.1 to v4.6.2 are vulnerable to Host Header Injection. By luring a victim application user to click on a link, an unauthenticated attacker can use the “forgot password” functionality to reset the victim’s password and successfully take over their account.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Userfrosting - Host-Header Injection Leads to Account Takeover
In Userfrosting, versions v0.3.1 to v4.6.2 are vulnerable to Host Header Injection. By luring a victim application user to click on a link, an unauthenticated attacker can use the “forgot password” functionality to reset the victim’s password and successfully take over their account.
- Record
CVE-2021-25994- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-74
- Updated
- 2026-11-02
EUVDEUVD-2022-0565
In Userfrosting, versions v0.3.1 to v4.6.2 are vulnerable to Host Header Injection. By luring a victim application user to click on a link, an unauthenticated attacker can use the “forgot password” functionality to reset the victim’s password and successfully take over their account.
- Record
EUVD-2022-0565- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-cv25-3gmg-c6m8
Injection in UserFrosting
In Userfrosting, versions v0.3.1 to v4.6.2 are vulnerable to Host Header Injection. By luring a victim application user to click on a link, an unauthenticated attacker can use the “forgot password” functionality to reset the victim’s password and successfully take over their account.
- Record
GHSA-cv25-3gmg-c6m8- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-74
- Updated
- 2026-11-02
NVD
In Userfrosting, versions v0.3.1 to v4.6.2 are vulnerable to Host Header Injection. By luring a victim application user to click on a link, an unauthenticated attacker can use the “forgot password” functionality to reset the victim’s password and successfully take over their account.
- Record
CVE-2021-25994- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-74
- Updated
- 2026-11-02
OSV
In Userfrosting, versions v0.3.1 to v4.6.2 are vulnerable to Host Header Injection. By luring a victim application user to click on a link, an unauthenticated attacker can use the “forgot password” functionality to reset the victim’s password and successfully take over their account.
- Record
CVE-2021-25994- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVGHSA-cv25-3gmg-c6m8
Injection in UserFrosting
In Userfrosting, versions v0.3.1 to v4.6.2 are vulnerable to Host Header Injection. By luring a victim application user to click on a link, an unauthenticated attacker can use the “forgot password” functionality to reset the victim’s password and successfully take over their account.
- Record
GHSA-cv25-3gmg-c6m8- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-74
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
userfrosting/userfrostingPackagist |
0.3.1 up to 4.6.3 | 4.6.3 |
userfrosting/userfrostingPackagist |
0.3.1 up to 4.6.3, plus listed versions 4.1.0-Alpha4.1.1-alpha4.1.2-alphav4.1.10-alphav4.1.11-alpha Show 44 moreShow lessv4.1.12-alphav4.1.13-alphav4.1.14-alphav4.1.15-alphav4.1.16v4.1.17v4.1.18v4.1.19v4.1.20v4.1.21v4.1.22v4.1.3-alphav4.1.4-alphav4.1.5-alphav4.1.6-alphav4.1.7-alphav4.1.8-alphav4.1.9-alphav4.2.0v4.2.0-alpha.1v4.2.0-alpha.2v4.2.0-beta.1v4.2.0-beta.2v4.2.2v4.2.3v4.2.4v4.3.0v4.3.0-beta.1v4.3.1v4.3.2v4.3.3v4.3.4v4.4.0v4.4.1v4.4.2v4.4.3v4.4.4v4.4.5v4.5.0v4.5.1v4.5.2v4.6.0v4.6.1v4.6.2 |
4.6.3 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-25994 is a high vulnerability (CVSS 8.8) in Userfrosting, published January 3, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.60%, the 75th percentile. Fixed in userfrosting/userfrosting 4.6.3.