Back Linuxsecurity SUSE Python-PyJWT Critical SSRF DoS Security Update 2026-2627
## This update for python-PyJWT fixes the following issues * CVE-2026-48522: `PyJWKClient` passes URI arguments directly to `urllib.request.urlopen()` and allows for SSRF and token forgery (bsc#1266798). * CVE-2026-48523: verifier-side algorithm allow-list bypass when `jwt.decode()` or `jwt.decode_complete()` are called with a PyJWK key (bsc#1266799). * CVE-2026-48525: unbounded Base64URL decoding of unused payload segment in `b64=false` detached JWS allows for DoS (bsc#1266801). * CVE-2026-48526: no validation of use of JSON Web Keys in HMAC algorithm when decoding JSON Web Tokens allows for forged HS256 tokens (bsc#1266802). ## Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
## This update for python-PyJWT fixes the following issues * CVE-2026-48522: `PyJWKClient` passes URI arguments directly to `urllib.request.urlopen()` and allows for SSRF and token forgery (bsc#1266798). * CVE-2026-48523: verifier-side algorithm allow-list bypass when `jwt.decode()` or `jwt.decode_complete()` are called with a PyJWK key (bsc#1266799). * CVE-2026-48525: unbounded Base64URL decoding of unused payload segment in `b64=false` detached JWS allows for DoS (bsc#1266801). * CVE-2026-48526: no validation of use of JSON Web Keys in HMAC algorithm when decoding JSON Web Tokens allows for forged HS256 tokens (bsc#1266802). ## Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
* CVE-2026-48522 ( SUSE ): 6.3
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
* CVE-2026-48522 ( SUSE ): 4.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
* CVE-2026-48522 ( NVD ): 4.2 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
* CVE-2026-48523 ( SUSE ): 5.3
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
* CVE-2026-48523 ( SUSE ): 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
* CVE-2026-48523 ( NVD ): 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
* CVE-2026-48525 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Announcement ID: SUSE-SU-2026:2627-1 Release Date: 2026-06-25T08:13:21Z Rating: important
Get the latest Linux and open source security news straight to your inbox.
The full story
This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.
