How severe is CVE-2026-81703?

CVE-2026-81703 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2026-81703 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-81703?

CVE-2026-81703 affects Jahlives Openssl Encrypt. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-81703?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2026-81703 published?

CVE-2026-81703 was published on 2026-08-27 and last updated on 2026-09-01.

CVE-2026-81703

CVE-2026-81703 is a medium-severity vulnerability in Jahlives Openssl Encrypt with a CVSS 3.x base score of 5.5. 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-287.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v4: 8.7
EPSS exploit prediction: 0% (5th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Jahlives Openssl Encrypt
Published: 2026-08-27
Last modified: 2026-09-01

Description

openssl_encrypt versions before 1.4.9 fail to validate encryption status of embedded post-quantum private keys in file metadata. Attackers can craft files with unencrypted embedded PQC keys that decrypt under any password, bypassing authentication and producing attacker-chosen plaintext with false integrity verification.

Frequently asked questions

What is CVE-2026-81703?: openssl_encrypt versions before 1.4.9 fail to validate encryption status of embedded post-quantum private keys in file metadata. Attackers can craft files with unencrypted embedded PQC keys that decrypt under any password, bypassing authentication and producing attacker-chosen plaintext with false integrity verification.
How severe is CVE-2026-81703?: CVE-2026-81703 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2026-81703 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-81703?: CVE-2026-81703 affects Jahlives Openssl Encrypt. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-81703?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2026-81703 published?: CVE-2026-81703 was published on 2026-08-27 and last updated on 2026-09-01.

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…

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