{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-75803 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-75803 is a critical vulnerability in Openssl Openssl, published on 25 Aug 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-2026-75803 and fix it if it is affected.\n\nWhat it is: CVE-2026-75803 is a critical vulnerability in Openssl Openssl, published on 25 Aug 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-2026-75803 in the wild and no public exploit code.\n\nAffected product: Openssl Openssl. 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-2026-75803/ (Markdown: https://insights.sbomify.com/CVE-2026-75803/index.md)","id":"CVE-2026-75803","markdown":"https://insights.sbomify.com/CVE-2026-75803/index.md","name":"CVE-2026-75803","record":{"aliases":["ALPINE-CVE-2026-75803","AZL-97671","AZL-97884","AZL-97935","BELL-CVE-2026-75803","CLEANSTART-2026-JP03196","DEBIAN-CVE-2026-75803","ECHO-f836-71cf-434b","GHSA-vr27-9w4v-hjw2","MINI-44jf-8phr-j393","MINI-fp3v-939x-cv3j","RHSA-2026:59260","RHSA-2026:62786","ROOT-OS-ALPINE-317-CVE-2026-75803","UBUNTU-CVE-2026-75803","USN-8678-3"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"OpenSSL cryptographic library","requires_auth":"none","summary":"Attackers can forge messages using ChaCha20-Poly1305 or AES-OCB with empty ciphertexts, bypassing authentication tag verification in OpenSSL.","user_interaction":"not_required","vuln_class":"weak_cryptography"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"openssl","cpe":[{"product":"openssl","vendor":"openssl"}],"cvss":{"score":9.1,"severity":"critical","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-354","name":"Improper Validation of Integrity Check Value"}],"description":"Issue summary: ChaCha20-Poly1305 and AES-OCB decryption with an empty\nciphertext can report success without verifying the supplied authentication\ntag when the operation is finalized by calling the EVP_Cipher() function.\n\nImpact summary: Applications calling EVP_Cipher() on an empty ciphertext and\nexpecting the call to check the AEAD tag may accept forged messages.\n\nCWE: CWE-354 (Improper Validation of Integrity Check Value)\n\nDescription: The EVP_Cipher() API call for AEAD ciphers behaves like a one\nshot encryption and decryption call. It also verifies the AEAD tag after the\ndecryption operation. However for AES-OCB and ChaCha20-Poly1305 ciphers\nit skipped the AEAD tag verification when an empty ciphertext was passed to\nthe function. The callers of this function might believe that a successful\nreturn indicates a valid AEAD tag for these ciphers, even when that has not\ntruly been validated in this case.\n\nFIPS impact: no\nThe FIPS modules in 4.0, 3.6, 3.5, 3.4, and 3.0 are not affected by this CVE\nas the affected algorithms are not FIPS approved and thus not implemented\nin the FIPS module.","ecosystems":["Red Hat:hummingbird:1"],"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":"AEAD Forgeries with Empty Ciphertext When Using EVP_Cipher()","id":"CVE-2026-75803","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"openssl:openssl","products":["openssl:openssl"],"type":"weak_cryptography","year":"2026"},"n_packages":8,"n_references":6,"next":{"headline":"QUIC Connection-Level Flow Control is Not Enforced for Streams","id":"CVE-2026-75804"},"packages":[{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:0.2.36-3.hum1"],"introduced":["0"],"last_affected":[],"package":"bootupd","purl":"pkg:rpm/redhat/bootupd","source":"RHSA-2026:59260"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.4.10-31.7.hum1"],"introduced":["0"],"last_affected":[],"package":"ruby3.4","purl":"pkg:rpm/redhat/ruby3.4","source":"RHSA-2026:62786"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.4.10-31.7.hum1"],"introduced":["0"],"last_affected":[],"package":"ruby3.4-bundled-gems","purl":"pkg:rpm/redhat/ruby3.4-bundled-gems","source":"RHSA-2026:62786"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.4.10-31.7.hum1"],"introduced":["0"],"last_affected":[],"package":"ruby3.4-default-gems","purl":"pkg:rpm/redhat/ruby3.4-default-gems","source":"RHSA-2026:62786"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.4.10-31.7.hum1"],"introduced":["0"],"last_affected":[],"package":"ruby3.4-devel","purl":"pkg:rpm/redhat/ruby3.4-devel","source":"RHSA-2026:62786"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.4.10-31.7.hum1"],"introduced":["0"],"last_affected":[],"package":"ruby3.4-doc","purl":"pkg:rpm/redhat/ruby3.4-doc","source":"RHSA-2026:62786"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:3.4.10-31.7.hum1"],"introduced":["0"],"last_affected":[],"package":"ruby3.4-libs","purl":"pkg:rpm/redhat/ruby3.4-libs","source":"RHSA-2026:62786"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:0.2.36-3.hum1"],"introduced":["0"],"last_affected":[],"package":"rust-bootupd","purl":"pkg:rpm/redhat/rust-bootupd","source":"RHSA-2026:59260"}],"prev":{"headline":"Apache Wicket: XSS in AjaxEditableLabel and its subclasses via IChoiceRenderer and defaultNullLabel","id":"CVE-2026-75802"},"products":["OpenSSL"],"published":"2026-08-25","related":[{"cvss_score":10,"headline":"Null dereference in n/a","id":"CVE-2009-3245","kev_date_added":null,"published":"2010-03-05"},{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2006-3738","kev_date_added":null,"published":"2006-09-28"},{"cvss_score":9.8,"headline":"Untrusted Sender DN Used as Format String in CMP Response Validation","id":"CVE-2026-63073","kev_date_added":null,"published":"2026-08-25"},{"cvss_score":9.8,"headline":"Use after free in n/a","id":"CVE-2016-6309","kev_date_added":null,"published":"2016-09-26"},{"cvss_score":9.8,"headline":"Integer overflow in n/a","id":"CVE-2016-0799","kev_date_added":null,"published":"2016-03-03"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2016-2842","kev_date_added":null,"published":"2016-03-03"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2003-0545","kev_date_added":null,"published":"2003-10-01"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"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":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-09-01","vendors":["OpenSSL"]},"summary":"Attackers can forge messages using ChaCha20-Poly1305 or AES-OCB with empty ciphertexts, bypassing authentication tag verification in OpenSSL.","url":"https://insights.sbomify.com/CVE-2026-75803/"}