CVE-2026-5479
Detail
Description
In wolfSSL's EVP layer, the ChaCha20-Poly1305 AEAD decryption path in wolfSSL_EVP_CipherFinal (and related EVP cipher finalization functions) fails to verify the authentication tag before returning plaintext to the caller. When an application uses the EVP API to perform ChaCha20-Poly1305 decryption, the implementation computes or accepts the tag but does not compare it against the expected value.
Metrics
NVD enrichment efforts reference publicly available information to associate
vector strings. CVSS information contributed by other sources is also
displayed.
CVSS 4.0 Severity and Vector Strings:
NVD assessment
not yet provided.
Vector: CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
CVSS 3.x Severity and Vector Strings:
Vector:
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS 2.0 Severity and Vector Strings:
Base
Score:
NVD assessment
not yet provided.
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Weakness Enumeration
| CWE-ID |
CWE Name |
Source |
|
CWE-354
|
Improper Validation of Integrity Check Value |
wolfSSL Inc.
|
Change History
4 change records found show changes
CVE Modified by CISA-ADP
6/17/2026 6:59:06 AM
| Action |
Type |
Old Value |
New Value |
| Added |
SSVC |
{"timestamp":"2026-04-21T00:00:00+00:00","id":"CVE-2026-5479","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}
|
CVE Modified by wolfSSL Inc.
6/17/2026 6:59:06 AM
| Action |
Type |
Old Value |
New Value |
| Added |
Affected |
[{"vendor":"wolfSSL","product":"wolfSSL","defaultStatus":"unaffected","programFiles":["wolfcrypt/src/evp.c"],"repo":"https://github.com/wolfSSL/wolfssl","versions":[{"version":"0","lessThan":"5.9.1","versionType":"semver","status":"affected"}]}]
|
Initial Analysis by NIST
4/29/2026 9:45:33 AM
| Action |
Type |
Old Value |
New Value |
| Added |
CVSS V3.1 |
AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
|
| Added |
CPE Configuration |
OR
*cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:* versions up to (excluding) 5.9.1
|
| Added |
Reference Type |
wolfSSL Inc.: https://github.com/wolfSSL/wolfssl/pull/10102 Types: Issue Tracking
|
New CVE Received from wolfSSL Inc.
4/10/2026 12:17:16 AM
| Action |
Type |
Old Value |
New Value |
| Added |
Description |
In wolfSSL's EVP layer, the ChaCha20-Poly1305 AEAD decryption path in wolfSSL_EVP_CipherFinal (and related EVP cipher finalization functions) fails to verify the authentication tag before returning plaintext to the caller. When an application uses the EVP API to perform ChaCha20-Poly1305 decryption, the implementation computes or accepts the tag but does not compare it against the expected value.
|
| Added |
CVSS V4.0 |
AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
|
| Added |
CWE |
CWE-354
|
| Added |
Reference |
https://github.com/wolfSSL/wolfssl/pull/10102
|
Quick Info
CVE Dictionary Entry: CVE-2026-5479 NVD
Published Date: 04/10/2026 NVD
Last Modified: 06/17/2026
Source: wolfSSL Inc.
|
