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Github Security Blog
Github Security Blog
•added 2025/12/08 9:30 p.m.•29 views

Altcha Proof-of-Work obfuscation mode cryptanalytic break

A cryptanalytic break in Altcha Proof-of-Work obfuscation mode version 0.8.0 and later allows for remote visitors to recover the Proof-of-Work nonce in constant time via mathematical deduction...

9.1CVSS5.9AI score0.0022EPSS
SaveExploits0References5Affected Software1
osv_ghsa
osv_ghsa
•added 2025/12/08 9:30 p.m.•25 views

GHSA-MPMC-QCHH-R9Q8 Altcha Proof-of-Work obfuscation mode cryptanalytic break

A cryptanalytic break in Altcha Proof-of-Work obfuscation mode version 0.8.0 and later allows for remote visitors to recover the Proof-of-Work nonce in constant time via mathematical deduction...

6.9CVSS5.9AI score0.0022EPSS
SaveExploits0References5
EUVD
EUVD
•added 2025/12/08 9:30 p.m.•24 views

EUVD-2025-201806

A cryptanalytic break in Altcha Proof-of-Work obfuscation mode version 0.8.0 and later allows for remote visitors to recover the Proof-of-Work nonce in constant time via mathematical deduction...

5.9AI score0.0022EPSS
SaveExploits0References4
NVD
NVD
•added 2025/12/08 7:15 p.m.•19 views

CVE-2025-65849

A cryptanalytic break in Altcha Proof-of-Work obfuscation mode version 0.8.0 and later allows for remote visitors to recover the Proof-of-Work nonce in constant time via mathematical deduction. NOTE: this is disputed by the Supplier because the product's objective is "to discourage automated...

9.1CVSS0.0022EPSS
SaveExploits0References3
osv_cve
osv_cve
•added 2025/12/08 7:15 p.m.•26 views

CVE-2025-65849

A cryptanalytic break in Altcha Proof-of-Work obfuscation mode version 0.8.0 and later allows for remote visitors to recover the Proof-of-Work nonce in constant time via mathematical deduction. NOTE: this is disputed by the Supplier because the product's objective is "to discourage automated...

9.1CVSS5.9AI score0.0022EPSS
SaveExploits0References3
Rapid7 Vulnerability Database (full)
Rapid7 Vulnerability Database (full)
•added 2025/12/08 12:00 a.m.•9 views

CVE-2025-65849: Use of a Broken or Risky Cryptographic Algorithm

A cryptanalytic break in Altcha Proof-of-Work obfuscation mode version 0.8.0 and later allows for remote visitors to recover the Proof-of-Work nonce in constant time via mathematical deduction. NOTE: this is disputed by the Supplier because the product's objective is "to discourage automated...

9.1CVSS6AI score0.0022EPSS
SaveExploits0References2
Positive Technologies
Positive Technologies
•added 2025/12/08 12:00 a.m.•27 views

PT-2025-49588

A cryptanalytic break in Altcha Proof-of-Work obfuscation mode version 0.8.0 and later allows for remote visitors to recover the Proof-of-Work nonce in constant time via mathematical deduction...

5.9AI score0.0022EPSS
SaveExploits0References4
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