CVE-2026-15432
When verifying a mac with a ChunkedMacVerification object, Tink compares the resulting tag with non constant time comparison. This potential
CVSS
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No CVSS
EPSS
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KEV
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Exploit Today
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0-100
Published: Jul 21, 2026 · Last modified: Jul 21, 2026 · CWE-208
Not enough EPSS history yet.
When verifying a mac with a ChunkedMacVerification object, Tink compares the resulting tag with non constant time comparison. This potentially allows an attacker to use timinig information as a side channel in order to get information how many bytes of a given tag match the correct tag. This in turn could allow to find a correct tag bytewise.
CVECVSSEPSSKEVRExploitTitleMod.
CVE-2026-546855.3 MED18.8%
——6FileBrowser Quantum is a free, self-hosted, web-based file manager. Prior to version 1.3.2-beta, the `/api/auth/login` authentication endpoint does not execute in constant time. When a non-existent username is supplied, the server returns a `401`/`403` response almost immediately. When a valid username is provided, the server performs a bcrypt password comparison, causing a measurable delay in the response time. Version 1.3.2-beta patches the issue.8hCVE-2026-66567.5 HIG20.3%
——6Crypt::Password versions through 0.28 for Perl are susceptible to timing attacks.
The check_password method uses the built-in eq operator. This allows discrepancies in timing to be used to guess the underlying hash.1dCVE-2026-95375.3 MED13.6%
——4Mojo::JWT versions before 1.02 for Perl verify HMAC signatures with a non-constant-time string comparison.
The decode() method compares the supplied signature to the recomputed HMAC with Perl's eq operator, which stops at the first differing byte, so the comparison time varies with the number of matching leading bytes.
A caller that decodes attacker supplied tokens leaks the expected signature through this timing variation, which can be aggregated over many requests to recover the signature and forge a token.1dCVE-2026-567643.7 LOW13.8%
——4Hono before 4.11.10 contains a timing attack vulnerability in the basicAuth and bearerAuth middlewares due to non-constant-time string comparison in the timingSafeEqual function. Attackers can exploit early termination of string equality checks to infer valid credentials through precise timing measurements.6dCVE-2026-218403.1 LOW4.9%
——1HCL BigFix Platform is affected by a user enumeration vulnerability which might allow an attacker, through careful system control and response time monitoring, to perform some level of user enumeration for the BigFix service.6dCVE-2026-54736—4.4%
——1Phalcon is a high-performance, full-stack PHP framework. Prior to 5.14.1, Phalcon\Encryption\Crypt::decrypt compares the attacker-supplied HMAC tag against the freshly computed HMAC using PHP/Zephir identity comparison, which lowers to a byte-wise comparison that returns early on the first differing byte. This observable timing discrepancy can allow an attacker to recover a valid tag byte-by-byte and attach it to a chosen IV and ciphertext so that decrypt() accepts tampered encrypted content as authentic. This issue is fixed in version 5.14.1.8d