openssl_encrypt before 1.4.0 Hardcoded Secret Key

published 2026-08-17 2 mo ago modified 2026-10-24 16 d ago also GHSA-p926-6hjp-w9jw , PYSEC-2026-3746 , EUVD-2026-60111

cvss: 7.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 43%
public exploits: 0; none known

openssl_encrypt versions before 1.4.0 contain a hardcoded default secret key in the standalone telemetry server configuration that is used for API key hashing. Attackers who know this default value can predict or forge API key hashes to compromise telemetry API authentication.

Patch / fix

fixed in 2

pypi openssl-encrypt 1.4.0
jahlives openssl_encrypt 1.4.0

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 2 mo ago (2026-08-18)

Exploit prediction

0.51% chance of exploitation in the next 30 days, higher than 43% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	4.0	8.7	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CNA	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA	4.0	8.7	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/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

Affected packages

ecosystem	package	affected	fixed in
pypi	openssl-encrypt	<1.4.0	1.4.0

Affected products

jahlives openssl_encrypt

Classification

Weakness

CWE-798 Use of Hard-coded Credentials

References

github.com /jahlives/openssl_encrypt/security/advisories/GHSA-p926-6hjp-w9jw
vendor-advisory, mitigation, advisory
vulncheck.com /advisories/openssl-encrypt-before-hardcoded-secret-key
third-party-advisory, advisory

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary