CVE-2019-10071
CWE-203Published: September 16, 2019· Updated: Jun 17, 2026
Official Description
The code which checks HMAC in form submissions used String.equals() for comparisons, which results in a timing side channel for the comparison of the HMAC signatures. This could lead to remote code execution if an attacker is able to determine the correct signature for their payload. The comparison should be done with a constant time algorithm instead.
Technical Analysis
CVE-2019-10071 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
All References (10)
Quick Facts
Related CVEs (CWE-203)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2019-10071 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts