01 Record
CVE-2026-108108
PHPNuxBill through 2025.3.20 CHAP Authentication Bypass via Password::chap_verify()
HighPUBLISHEDCNA: VulnCheck
CNA base score7.1 CVSS v4.0CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N
02 Description
PHPNuxBill through 2025.3.20 CHAP Authentication Bypass via Password::chap_verify()
03 Exploitation and scoring
- Exploitation
- Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
- SSVC decision
- ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 0.34% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 27.3% of scored records. A rank, not a probability.
- NVD base score
- 7.1 (CVSS v4.0), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- NVD analysis status
- Deferred. NVD last modified this record on 2026-10-14.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-10-09 14:33Z19 DAYS AGO
- Last updated
- 2026-10-14 01:51Z15 DAYS AGO
- Reserved
- 2026-10-09
- Assigning CNA
- VulnCheck
- Record state
- PUBLISHED
- Severity
- High (CVSS 7.1)
- CNA CVSS vector
- CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N
- Weaknesses
- CWE-287Improper AuthenticationClass
- Data version
- 5.2
- Document digest
- 7c1eb5a6582d09683107f699d54b662cfbe51bfcd2de7e33faa4cff4c3b4ee69
05 Affected products
VendorProductVersionsPlatforms
06 References
- github.comGitHub Security Advisory (GHSA-6f62-x25v-9686)https://github.com/hotspotbilling/phpnuxbill/security/advisories/GHSA-6f62-x25v-9686
- github.comhttps://github.com/hotspotbilling/phpnuxbill/blob/2025.3.13/system/autoload/Password.php#L48
- github.comhttps://github.com/hotspotbilling/phpnuxbill
- www.vulncheck.comVulnCheck Advisory: PHPNuxBill through 2025.3.20 CHAP Authentication Bypass via Password::chap_verify()https://www.vulncheck.com/advisories/phpnuxbill-through-2025.3.20-chap-authentication-bypass-via-password-chap-verify