{"id":"CVE-2026-123676","kind":"vulnerability","aliases":["CVE-2026-123676"],"related":[],"title":"Novel web app: flawed authorization lets remote users read restricted chapter content","description":"A vulnerability has been found in xxyopen/201206030 novel up to 3.5.0. This impacts the function BookServiceImpl.getBookContentAbout of the file src/main/java/io/github/xxyopen/novel/service/impl/BookServiceImpl.java of the component Book Content Service. Such manipulation of the argument chapterId leads to improper authorization. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The name of the patch is 966c4bdde3521dc0a165d15a2acff66ee33eaaa7. Applying a patch is advised to resolve this issue.","summary":"The xxyopen novel application up to version 3.5.0 fails to check authorization properly in BookServiceImpl.getBookContentAbout when handling the chapterId argument. A remote attacker can manipulate that argument to access book chapter content they should not be able to read.","severity":"medium","cvss":5.5,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["java","novel","other","self-hosted"],"not_affected_if":[],"how_to_check":"- Check whether the deployed novel version is `3.5.0` or earlier, and whether commit `966c4bdde3521dc0a165d15a2acff66ee33eaaa7` is applied to BookServiceImpl.java","fix":"- Apply the patch named `966c4bdde3521dc0a165d15a2acff66ee33eaaa7` from the project repository","status":"open","published_at":"2026-11-06T16:17:54+00:00","first_seen_at":"2026-11-06T16:42:41+00:00","triaged_at":"2026-11-06T16:44:48+00:00","updated_at":"2026-11-06T16:44:48+00:00","category":"other","confidence":0.6,"triage":{"at":"2026-11-06T16:44:48Z","model":"claude-haiku-5-5","output":{"fix":"- Apply the patch named `966c4bdde3521dc0a165d15a2acff66ee33eaaa7` from the project repository","reach":"internet","title":"Novel web app: flawed authorization lets remote users read restricted chapter content","impact":"medium","summary":"The xxyopen novel application up to version 3.5.0 fails to check authorization properly in BookServiceImpl.getBookContentAbout when handling the chapterId argument. A remote attacker can manipulate that argument to access book chapter content they should not be able to read.","audience":"businesses","category":"other","nicknames":[],"who_cares":["novel","java","self-hosted"],"confidence":0.6,"fix_status":"available","needs_auth":"unknown","worst_case":"Remote users read chapter content they are not authorized to see","analyst_note":"","how_to_check":"- Check whether the deployed novel version is `3.5.0` or earlier, and whether commit `966c4bdde3521dc0a165d15a2acff66ee33eaaa7` is applied to BookServiceImpl.java","plain_action":"","needs_analyst":false,"not_affected_if":[],"who_is_affected":"Teams running the xxyopen novel application up to version 3.5.0 are exposed, because chapter content is served through the affected BookServiceImpl.getBookContentAbout function. The sources do not say whether an account is needed or whether the issue depends on configuration, so exposure beyond the affected version is unknown.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.001084,"input_tokens":4335,"output_tokens":1302,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-123676':15A,18A '-2026':14A,17A '3.5.0':32B,74C '966c4bdde3521dc0a165d15a2acff66ee33eaaa7':124C 'abl':61B 'access':53B 'advis':129C 'app':3A 'appli':125C 'applic':28B 'argument':44B,51B,94C 'attack':47B,101C 'author':5A,36B,99C 'book':54B,87C 'bookserviceimpl.getbookcontentabout':39B,79C 'chapter':11A,55B 'chapterid':43B,95C 'check':35B 'compon':86C 'content':12A,56B,88C 'cve':13A,16A 'disclos':110C 'exploit':107C 'fail':33B 'file':82C 'flaw':4A 'found':68C 'function':78C 'handl':41B 'host':24B 'impact':76C 'improp':98C 'issu':133C 'java':19B 'launch':104C 'lead':96C 'let':6A 'manipul':49B,91C 'may':115C 'name':119C 'novel':1A,20B,27B,71C 'patch':122C,127C 'proper':37B 'public':113C 'read':9A,63B 'remot':7A,46B,105C 'resolv':131C 'restrict':10A 'self':23B 'self-host':22B 'servic':89C 'src/main/java/io/github/xxyopen/novel/service/impl/bookserviceimpl.java':83C 'use':117C 'user':8A 'version':31B 'vulner':65C 'web':2A 'xxyopen':26B 'xxyopen/201206030':70C","nicknames":[],"mitigations":[],"who_affected":"Teams running the xxyopen novel application up to version 3.5.0 are exposed, because chapter content is served through the affected BookServiceImpl.getBookContentAbout function. The sources do not say whether an account is needed or whether the issue depends on configuration, so exposure beyond the affected version is unknown.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["java","medium","novel","other","selfhosted"],"campaign_type":null,"search_a":"'-123676':15A,18A '-2026':14A,17A 'app':3A 'author':5A 'chapter':11A 'content':12A 'cve':13A,16A 'flaw':4A 'let':6A 'novel':1A 'read':9A 'remot':7A 'restrict':10A 'user':8A 'web':2A","search_b":"'3.5.0':32B 'abl':61B 'access':53B 'applic':28B 'argument':44B,51B 'attack':47B 'author':36B 'book':54B 'bookserviceimpl.getbookcontentabout':39B 'chapter':55B 'chapterid':43B 'check':35B 'content':56B 'fail':33B 'handl':41B 'host':24B 'java':19B 'manipul':49B 'novel':20B,27B 'proper':37B 'read':63B 'remot':46B 'self':23B 'self-host':22B 'version':31B 'xxyopen':26B","search_c":"'3.5.0':74C '966c4bdde3521dc0a165d15a2acff66ee33eaaa7':124C 'advis':129C 'appli':125C 'argument':94C 'attack':101C 'author':99C 'book':87C 'bookserviceimpl.getbookcontentabout':79C 'chapterid':95C 'compon':86C 'content':88C 'disclos':110C 'exploit':107C 'file':82C 'found':68C 'function':78C 'impact':76C 'improp':98C 'issu':133C 'launch':104C 'lead':96C 'manipul':91C 'may':115C 'name':119C 'novel':71C 'patch':122C,127C 'public':113C 'remot':105C 'resolv':131C 'servic':89C 'src/main/java/io/github/xxyopen/novel/service/impl/bookserviceimpl.java':83C 'use':117C 'vulner':65C 'xxyopen/201206030':70C","first_public_at":"2026-11-06T16:17:54+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","cvss_by":"cna@vuldb.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-123676","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-123676","severity":null,"published_at":"2026-11-06T16:17:54+00:00","modified_at":"2026-11-06T16:17:55+00:00","first_seen_at":"2026-11-06T16:42:41+00:00","fetched_at":"2026-11-06T16:42:41+00:00","note":null}],"documents":[{"id":87935,"url":"https://github.com/201206030/novel/commit/966c4bdde3521dc0a165d15a2acff66ee33eaaa7","title":"Patch: github.com","kind":"other","source":"nvd","publisher":"vendor","text":null,"published_at":null,"relation":"fix","confidence":null,"note":"Patch: github.com"}],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}