{"id":"CVE-2026-88798","state":"PUBLISHED","title":"Really Simple Security (Free) < 9.8.3 - Unauthenticated Unbounded Option Growth via Spoofed Client IP Header","description":"The Really Simple Security  WordPress plugin before 9.8.3 does not validate a client-supplied address value before using it as a storage key in one of its own options, allowing unauthenticated attackers to grow that option without bound and to slow the site's handling of missing pages.","publishedAt":"2026-09-18T06:00:15.729Z","updatedAt":"2026-09-18T11:09:13.043Z","severity":{"score":5.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","source":"CISA-ADP"},"assigner":"WPScan","products":["Unknown Really Simple Security"],"affected":[{"vendor":"Unknown","product":"Really Simple Security","defaultStatus":"unaffected","versions":[{"version":"8.1.6","status":"affected","lessThan":"9.8.3","versionType":"semver"}]}],"references":["https://wpscan.com/vulnerability/e658dcd2-2ff6-4611-a28d-e2482c65be8b/"],"weaknesses":["CWE-400"],"ingestedAt":"2026-10-29T20:13:26.108Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/88xxx/CVE-2026-88798.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-88798","state":"PUBLISHED","datePublished":"2026-09-18T06:00:15.729Z","dateUpdated":"2026-09-18T11:09:13.043Z","assignerShortName":"WPScan","assignerOrgId":"1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81","dateReserved":"2026-09-10T08:22:07.339Z"},"containers":{"cna":{"title":"Really Simple Security (Free) < 9.8.3 - Unauthenticated Unbounded Option Growth via Spoofed Client IP Header","descriptions":[{"lang":"en","value":"The Really Simple Security  WordPress plugin before 9.8.3 does not validate a client-supplied address value before using it as a storage key in one of its own options, allowing unauthenticated attackers to grow that option without bound and to slow the site's handling of missing pages."}],"affected":[{"vendor":"Unknown","product":"Really Simple Security","defaultStatus":"unaffected","versions":[{"version":"8.1.6","status":"affected","lessThan":"9.8.3","versionType":"semver"}]}],"references":[{"url":"https://wpscan.com/vulnerability/e658dcd2-2ff6-4611-a28d-e2482c65be8b/","tags":["exploit","vdb-entry","technical-description"]}],"problemTypes":[{"descriptions":[{"description":"CWE-400 Uncontrolled Resource Consumption","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"WPScan","orgId":"1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81","dateUpdated":"2026-09-18T06:00:15.729Z"},"credits":[{"lang":"en","value":"Naoki Kawahigashi","type":"finder"},{"lang":"en","value":"WPScan","type":"coordinator"}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"WPScan CVE Generator"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.3,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"LOW","privilegesRequired":"NONE","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-09-18T11:02:21.267727Z","id":"CVE-2026-88798","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-400","type":"CWE","lang":"en","description":"CWE-400 Uncontrolled Resource Consumption"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-18T11:09:13.043Z"}}]}}}