{"answers":{"affected":"3 open source packages ship an affected version, including pyjwt. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-48524 in the wild and no public exploit code.","fix":"Upgrade pyjwt to 2.13.0 or later.","what":"CVE-2026-48524 is a low-severity denial of service vulnerability in jpadilla pyjwt, published on 28 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-48524 and fix it if it is affected.\n\nWhat it is: CVE-2026-48524 is a low-severity denial of service vulnerability in jpadilla pyjwt, published on 28 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-48524 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- pyjwt (PyPI): affected all versions; fixed in 2.13.0\n- pyjwt (PyPI): affected from 2.0.0; fixed in 2.13.0\n- pyjwt (PyPI): affected from 2.0.0; fixed in 2.13.0\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-48524/ (Markdown: https://insights.sbomify.com/CVE-2026-48524/index.md)","id":"CVE-2026-48524","markdown":"https://insights.sbomify.com/CVE-2026-48524/index.md","name":"CVE-2026-48524","record":{"aliases":["AZL-93027","BELL-CVE-2026-48524","CLEANSTART-2026-QN15883","DEBIAN-CVE-2026-48524","ECHO-5526-5e92-5565","GHSA-fhv5-28vv-h8m8","MINI-22v2-g977-h32v","MINI-3fv6-hvcx-cpcg","MINI-3gjv-c268-gc72","MINI-3j2c-hr5f-gvfq","MINI-4ppc-4338-3gp4","MINI-543h-hpj9-vh2j","MINI-5xqq-rm8r-64w8","MINI-623r-hgvx-gv3p","MINI-6564-785r-w84c","MINI-6g43-9hm6-xf94","MINI-6pc8-x8rj-3hv5","MINI-72v6-c866-q6ch","MINI-7q62-h829-2fp7","MINI-8922-mmrr-hh46","MINI-992f-9634-99wq","MINI-9xrh-hq5w-55m4","MINI-c9x3-4fvv-4c25","MINI-cghx-q6cf-4cgf","MINI-fmc7-8qww-cqcg","MINI-h479-6wg2-8rpm","MINI-hvj3-8v3g-3cwc","MINI-jwpg-px7j-685q","MINI-rhjh-5pf8-4vp4","MINI-vh9h-j9jj-hxw5","MINI-wp6j-p7gc-7f4m","MINI-wqg3-g3rr-vmmm","MINI-x5mc-rcp8-75c4","MINI-x78x-q7vm-32jm","PYSEC-2026-177","ROOT-APP-PYPI-CVE-2026-48524","UBUNTU-CVE-2026-48524"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Python JWT library","requires_auth":"none","summary":"Attackers can cause denial of service by forcing unlimited outbound requests to JWKS endpoints using unknown key IDs in JWT headers.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"pyjwt","vendor":"pyjwt_project"}],"cvss":{"score":3.7,"severity":"low","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-755","name":"Improper Handling of Exceptional Conditions"},{"id":"CWE-460","name":"Improper Cleanup on Thrown Exception"}],"description":"PyJWT is a JSON Web Token implementation in Python. Prior to 2.13.0, PyJWKClient.get_signing_key() forces a fresh HTTP request to the JWKS endpoint for every JWT with an unknown kid value, with no rate limiting. Since kid comes from the unverified token header, an attacker can trigger unlimited outbound requests. The vulnerability surfaces only when a JWKS fetch fails; an attacker can attempt to provoke that with sustained unknown-kid traffic, but the outcome depends on upstream JWKS-endpoint behavior (rate limiting, transient errors) which is beyond the attacker's control. This vulnerability is fixed in 2.13.0.","ecosystems":["PyPI"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"PyJWT: PyJWKClient unbounded JWKS endpoint requests via attacker-controlled kid values (DoS)","id":"CVE-2026-48524","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":3,"n_references":1,"next":{"headline":"PyJWT: Unauthenticated DoS via unbounded Base64URL decoding of unused payload segment in b64=false detached JWS","id":"CVE-2026-48525"},"packages":[{"ecosystem":"PyPI","fixed":["2.13.0"],"introduced":["0"],"last_affected":[],"package":"pyjwt","purl":"pkg:pypi/pyjwt","source":"PYSEC-2026-177"},{"ecosystem":"PyPI","fixed":["2.13.0"],"introduced":["2.0.0"],"last_affected":[],"package":"pyjwt","purl":null,"source":"GHSA-fhv5-28vv-h8m8"},{"ecosystem":"PyPI","fixed":["2.13.0"],"introduced":["2.0.0"],"last_affected":[],"package":"pyjwt","purl":"pkg:pypi/pyjwt","source":"GHSA-fhv5-28vv-h8m8"}],"prev":{"headline":"PyJWT: Algorithm allow-list bypass when decoding with `PyJWK` / `PyJWKClient` keys","id":"CVE-2026-48523"},"products":["pyjwt"],"published":"2026-05-28","related":[{"cvss_score":9.1,"headline":"PyJWT: Asymmetric-PEM detection bypass: whitespace/line-ending-mutated public keys skip the HS/asymmetric confusion guard","id":"CVE-2026-102268","kev_date_added":null,"published":"2026-09-28"},{"cvss_score":7.5,"headline":"PyJWT accepts unknown `crit` header extensions (RFC 7515 §4.1.11 MUST violation)","id":"CVE-2026-32597","kev_date_added":null,"published":"2026-03-12"},{"cvss_score":7.4,"headline":"PyJWK accepts empty HMAC keys, bypassing PyJWT's empty-key validation","id":"CVE-2026-102266","kev_date_added":null,"published":"2026-09-28"},{"cvss_score":7.4,"headline":"PyJWT: PyJWKClient follows redirects when fetching JWKS","id":"CVE-2026-102267","kev_date_added":null,"published":"2026-09-28"},{"cvss_score":7.4,"headline":"PyJWT: Public keys in DER form are accepted as HMAC secrets, bypassing the CVE-2022-29217 guard","id":"CVE-2026-102271","kev_date_added":null,"published":"2026-09-28"},{"cvss_score":7.4,"headline":"PyJWT BOM Bypass","id":"CVE-2026-102272","kev_date_added":null,"published":"2026-09-28"},{"cvss_score":7.4,"headline":"PyJWT accepts public JWK containers as HMAC secrets","id":"CVE-2026-102273","kev_date_added":null,"published":"2026-09-28"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"PyPA Advisory Database","prefix":"PYSEC"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-05-28","vendors":["jpadilla"]},"summary":"Attackers can cause denial of service by forcing unlimited outbound requests to JWKS endpoints using unknown key IDs in JWT headers.","url":"https://insights.sbomify.com/CVE-2026-48524/"}