{"id":"CVE-2026-112863","kind":"vulnerability","aliases":["CVE-2026-112863"],"related":[],"title":"Kallyas WordPress theme: reflected XSS through 4.25.0","description":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Hogash KALLYAS kallyas allows Reflected XSS.This issue affects KALLYAS: from n/a through 4.25.0.","summary":"The Kallyas theme by Hogash does not neutralize input in generated web pages, so a crafted link can inject script. An attacker can run JavaScript in a visitor's browser, such as stealing session data.","severity":"high","cvss":7.1,"epss":0.00251,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["kallyas-theme","other","wordpress"],"not_affected_if":["not-using-kallyas"],"how_to_check":"- Check the installed Kallyas theme version in the WordPress admin under Appearance > Themes or in the style.css header\n- Confirm whether the version is `4.25.0` or earlier","fix":"- Update the Kallyas theme to a version later than `4.25.0` once the vendor publishes one; the sources do not name a fixed version\n- Until then, unknown","status":"open","published_at":"2026-10-23T13:17:07+00:00","first_seen_at":"2026-10-23T21:57:33+00:00","triaged_at":"2026-10-25T03:31:14+00:00","updated_at":"2026-10-25T12:38:50+00:00","category":"other","confidence":0.6,"triage":{"at":"2026-10-25T03:31:14Z","model":"claude-haiku-5-5","output":{"fix":"- Update the Kallyas theme to a version later than `4.25.0` once the vendor publishes one; the sources do not name a fixed version\n- Until then, unknown","reach":"internet","title":"Kallyas WordPress theme: reflected XSS through 4.25.0","impact":"medium","summary":"The Kallyas theme by Hogash does not neutralize input in generated web pages, so a crafted link can inject script. An attacker can run JavaScript in a visitor's browser, such as stealing session data.","category":"other","nicknames":[],"who_cares":["wordpress","kallyas-theme"],"confidence":0.6,"needs_auth":"no","worst_case":"Attacker runs scripts in visitors' browsers, stealing session cookies","analyst_note":"Confirm the fixed Kallyas version and the affected parameter from the NVD entry or vendor changelog.","how_to_check":"- Check the installed Kallyas theme version in the WordPress admin under Appearance > Themes or in the style.css header\n- Confirm whether the version is `4.25.0` or earlier","needs_analyst":true,"not_affected_if":["not-using-kallyas"],"who_is_affected":"Sites running the Kallyas theme at version `4.25.0` or earlier are exposed when a visitor follows a crafted link. Sites not using Kallyas, or running a later version, can skip it. The sources do not say whether specific configurations change the risk.","user_interaction":"yes","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.000597,"input_tokens":3312,"output_tokens":531,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-112863':10A,13A '-2026':9A,12A '4.25.0':7A,80C 'affect':75C 'allow':71C 'attack':40B 'browser':48B 'craft':34B 'cross':63C 'cross-sit':62C 'cve':8A,11A 'data':53B 'generat':29B,61C 'hogash':23B,68C 'improp':54C 'inject':37B 'input':27B,57C 'issu':74C 'javascript':43B 'kallya':1A,15B,20B,69C,70C,76C 'kallyas-them':14B 'link':35B 'n/a':78C 'neutral':26B,55C 'page':31B,60C 'reflect':4A,72C 'run':42B 'script':38B,65C 'session':52B 'site':64C 'steal':51B 'theme':3A,16B,21B 'visitor':46B 'vulner':66C 'web':30B,59C 'wordpress':2A,18B 'xss':5A 'xss.this':73C","nicknames":[],"mitigations":[],"who_affected":"Sites running the Kallyas theme at version `4.25.0` or earlier are exposed when a visitor follows a crafted link. Sites not using Kallyas, or running a later version, can skip it. The sources do not say whether specific configurations change the risk.","tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-23T13:17:07+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L","cvss_by":"audit@patchstack.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-112863","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-112863","severity":null,"published_at":"2026-10-23T13:17:07+00:00","modified_at":"2026-10-23T16:06:31+00:00","first_seen_at":"2026-10-23T21:57:33+00:00","fetched_at":"2026-10-23T22:29:03+00:00","note":null},{"source":"epss","external_id":"CVE-2026-112863","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-112863","severity":null,"published_at":null,"modified_at":null,"first_seen_at":"2026-10-25T12:38:50+00:00","fetched_at":"2026-10-25T12:38:50+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}