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CVE

CVE-2025-65849

Altcha Proof-of-Work obfuscation mode cryptanalytic break
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CVE

CVE-2025-65849

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.1
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

https://nvd.nist.gov/vuln/detail/CVE-2025-65849, https://altcha.org/docs/v2/obfuscation, https://github.com/altcha-org/altcha, https://github.com/altcha-org/altcha/blob/154f874cbcdd4e639783463130d13988a2bd1bdc/src/helpers.ts#L170-L194, https://github.com/eternal-flame-AD/altcha-deobfs

Severity

9.1

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
9.1
EPSS Probability
0.00017%
EPSS Percentile
0.03282%
Introduced Version
0.8.0
Fix Available

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