{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-13602 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-13602 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-13602 is a high-severity authentication bypass vulnerability in pretix, published on 1 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-13602 and fix it if it is affected.\n\nWhat it is: CVE-2026-13602 is a high-severity authentication bypass vulnerability in pretix, published on 1 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-13602 in the wild and no public exploit code.\n\nAffected product: pretix. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2026-13602/ (Markdown: https://insights.sbomify.com/CVE-2026-13602/index.md)","id":"CVE-2026-13602","markdown":"https://insights.sbomify.com/CVE-2026-13602/index.md","name":"CVE-2026-13602","record":{"aliases":["GHSA-q93m-6jvc-jc45"],"analysis":{"component_type":"web_application","fix_type":"patch","impacts":["privilege_escalation","data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"pretix ticketing system","requires_auth":"low_privilege","summary":"Attackers can hijack sessions and impersonate any user, including admins, by exploiting cryptographic signature flaws in payment plugins and core redirect features.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"rami.io","cpe":[],"cvss":{"score":7.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U","version":"4.0"},"cwes":[{"id":"CWE-323","name":"Reusing a Nonce, Key Pair in Encryption"},{"id":"CWE-20","name":"Improper Input Validation"}],"description":"We found a chain of combining multiple weaknesses in the product that could allow an attacker to become any user in the backend and access any data:\n\n  *  \n\nThe payment integration plugins Stripe (included in the core system), pretix-mollie, pretix-oppwa, pretix-bitpay, pretix-payone, pretix-secuconnect, pretix-sofort, and pretix-saferpay\n contain a code path that is intended for the transport of session \nparameters from a tab with isolated cookies (e.g. in the pretix widget) \nto a new tab. For this purpose, a set of session parameters is \ncryptographically signed and then passed to the new tab as a URL \nparameter. The plugins perform no further validation of the session \nparameters, other than the cryptographic signature being valid. This is \nfixed with the releases issued today by strictly validating that no \nsession parameters outside of the scope of the respective plugin may be \nset.\n\n  *  \n\nAn unrelated feature in the core system is used to generate redirect links that obfuscate any Referer\n headers for outgoing links to prevent leakage of secrets in URLs. This \nredirect page also requires cryptographically signed parameters. \nUnfortunately, it uses the same key and salt for the signature as the \npreviously mentioned feature in the payment integration plugins. A \nmotivated attacker with access to at least one event in the backend can \ntrick the system into cryptographically signing arbitrary content using \nspecially crafted links. In combination with the previous issue, the \nattacker could use this to set and modify arbitrary parameters on their \nuser session by injecting the signed parameters into the feature of the \npayment providers. This is fixed with the releases issued today by using\n different salts for the signature for each plugin and feature.\n\n  *  \n\nA third, unrelated feature in the core system is used for admin users\n to act on behalf of another user, mostly for debugging purposes. With \nbeing able to insert arbitrary parameters into a session, an attacker \ncan abuse this feature to change their session from their actual user to\n any user in the system by guessing a valid user ID. This is fixed with\n the release today by requiring unguessable information to be contained \nin the session of the user to switch to.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Session takeover vulnerability","id":"CVE-2026-13602","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"SSRF with API key leak in pretix-oppwa","id":"CVE-2026-13603"},"packages":[],"prev":{"headline":"Yelp: yelp-xsl: overly permissive content security policy in yelp allows host file disclosure from flatpak applications","id":"CVE-2026-13601"},"products":["pretix","pretix-bitpay","pretix-mollie","pretix-oppwa","pretix-payone","pretix-saferpay","pretix-secuconnect","pretix-sofort"],"published":"2026-07-01","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"total"},"state":"PUBLISHED","updated":"2026-07-01","vendors":["pretix"]},"summary":"Attackers can hijack sessions and impersonate any user, including admins, by exploiting cryptographic signature flaws in payment plugins and core redirect features.","url":"https://insights.sbomify.com/CVE-2026-13602/"}