How severe is CVE-2026-81691?

CVE-2026-81691 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-81691 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-81691?

CVE-2026-81691 affects Jahlives Openssl Encrypt. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-81691?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2026-81691 published?

CVE-2026-81691 was published on 2026-08-27 and last updated on 2026-09-02.

CVE-2026-81691

CVE-2026-81691 is a high-severity vulnerability in Jahlives Openssl Encrypt with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-319.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 8.7
EPSS exploit prediction: 0% (10th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-319
Affected product: Jahlives Openssl Encrypt
Published: 2026-08-27
Last modified: 2026-09-02

Description

openssl_encrypt versions before 1.4.9 fail to validate server URLs in login and register_with_email functions, accepting unencrypted http:// URLs and unconfigured hosts. Attackers on the network path can intercept cleartext credentials including client_id, passwords, and JWTs to achieve full keyserver account takeover.

Frequently asked questions

What is CVE-2026-81691?: openssl_encrypt versions before 1.4.9 fail to validate server URLs in login and register_with_email functions, accepting unencrypted http:// URLs and unconfigured hosts. Attackers on the network path can intercept cleartext credentials including client_id, passwords, and JWTs to achieve full keyserver account takeover.
How severe is CVE-2026-81691?: CVE-2026-81691 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-81691 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-81691?: CVE-2026-81691 affects Jahlives Openssl Encrypt. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-81691?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2026-81691 published?: CVE-2026-81691 was published on 2026-08-27 and last updated on 2026-09-02.

References

Affected products (1)

cpe:2.3:a:jahlives:openssl_encrypt:*:*:*:*:*:python:*:*

More vulnerabilities in Jahlives Openssl Encrypt

CVE-2026-81702 — Critical (CVSS 9.8): openssl_encrypt before 1.4.9 fails to re-derive and validate fingerprints when loading identities from identity.json,…
CVE-2026-81701 — Critical (CVSS 9.8): openssl_encrypt versions before 1.4.9 use a denylist to identify trusted built-in plugins, allowing unsigned plugins in…
CVE-2026-81700 — Critical (CVSS 9.8): openssl_encrypt versions before 1.4.9 contain a signature verification vulnerability in gpg_runner.verify_detached that…
CVE-2026-74901 — Critical (CVSS 9.8): openssl_encrypt versions before 1.4.0 contain an authentication bypass vulnerability in pqc.py where AES-GCM decryption…
CVE-2026-74900 — Critical (CVSS 9.8): openssl_encrypt versions before 1.4.0 contain a critical vulnerability in pqc.py where KEM decapsulation failures…
CVE-2026-74899 — Critical (CVSS 9.8): openssl_encrypt versions before 1.4.0 contain a sandbox escape vulnerability in IsolatedPluginExecutor that exposes…

All CVEs affecting Jahlives Openssl Encrypt →

Other CWE-319 (Cleartext Transmission of Sensitive Information) vulnerabilities

CVE-2026-22306 — Critical (CVSS 10.0): Download of code without integrity check, inclusion of functionality from untrusted control sphere, and cleartext…
CVE-2025-4378 — Critical (CVSS 10.0): Cleartext Transmission of Sensitive Information, Use of Hard-coded Credentials vulnerability in Ataturk University…
CVE-2025-47419 — Critical (CVSS 10.0): Cleartext Transmission of Sensitive Information vulnerability in Crestron Automate VX allows Sniffing Network…
CVE-2026-69658 — Critical (CVSS 9.8): MQTT credentials and control traffic are transmitted in cleartext, exposing sensitive information to network-level…
CVE-2026-48902 — Critical (CVSS 9.8): The password and username reset features created plain http links for https connections if the "Force SSL" flag wasn't…
CVE-2025-34271 — Critical (CVSS 9.8): Nagios Log Server versions prior to 2024R2.0.2 contain a vulnerability in the cluster manager component when…

Browse all CWE-319 (Cleartext Transmission of Sensitive Information) vulnerabilities →