Vulnerability · Published Aug 27, 2026 · Assigned by VulnCheck
CVE-2026-81693openssl_encrypt before 1.4.9 Denial of Service via QR total field
High 7.5
In plain English
A high-severity security flaw in openssl_encrypt from jahlives. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.5%top 57.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
openssl_encrypt before 1.4.9 fails to validate the total field from QR JSON payloads before materializing ranges. Attackers can supply crafted QR images with extremely large total values to trigger unbounded memory allocation and cause denial of service through out-of-memory conditions.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | openssl-encrypt | 1.4.9 | PYSEC-2026-3798 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| jahlives | openssl_encrypt | 0 – before 1.4.9 |
Weakness: CWE-789 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- GitHub Security Advisory (GHSA-r23m-gf2m-8www) vendor-advisory
- VulnCheck Advisory: openssl_encrypt before 1.4.9 Denial of Service via QR total field third-party-advisory