the-sanitizer-is-the-weapon-cve-2026-68749-cve-2026-68750-quadratic-dos-in-elixir-html-sanitize-ex

CVE-2026-68749 / CVE-2026-68750 — PoC Quadratic denial of service in htmlsanitizeex run of word chars with a trailing : CVE-2026-68750| HtmlSanitizeEx.Traverser.traverse/2| CWE-407 quadratic traversal| flat run of allowed sibling tags e.g. a × 20,000 CVE-2026-68749 is only reachable via html5/1 o...

CVE-2026-63447 Suricata ftp: crafted FTP traffic can cause quadratic CPU consumption

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.5 until 8.0.6, the FTP parser in src/app-layer-ftp.c can continue allocating transactions after app-layer.protocols.ftp.max-tx is reached while processing one large chunk...

CVE-2026-92596 Nodemailer before 9.1.0 Denial of Service via addressparser

Nodemailer before 9.1.0 contains a quadratic time complexity vulnerability in the addressparser component that allows remote attackers to cause denial of service by supplying a crafted comma-separated address list. Attackers can send a single email with a large number of addresses to block the...

TencentOS Server 4: python-sqlparse (TSSA-2026:1008)

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2026:1008 advisory. Package updates are available for TencentOS Server 4 that fix the following vulnerabilities...

EUVD-2026-77000

Nodemailer versions 9.1.0 through 10.0.4 contain a quadratic time complexity vulnerability in the addressparser component when parsing email addresses with RFC 5322 comments. Attackers can craft malicious email headers with comment-separated atoms to consume excessive CPU and block the Node.js...

DEBIAN-CVE-2026-68497

jackson-databind binds a JSON string to a javax.xml.datatype.Duration or javax.xml.datatype.XMLGregorianCalendar field by passing the raw string verbatim to DatatypeFactory.newDurationvalue or newXMLGregorianCalendarvalue in CoreXMLDeserializers.Std.deserialize. These deserializers are registered...

CVE-2026-85446

MOOS-IvP versions through 24.8.1 contain a quadratic processing vulnerability in uFldNodeComms where each new node identity creates a ledger entry and triggers all-pairs distribution work. Attackers can supply unbounded distinct node names in reports to drive the shoreside broker into quadratic...

NLTK: Quadratic-time DoS in PorterStemmer via long runs of 'y'

nltk.stem.PorterStemmer.stem -- a ubiquitous public API applied to arbitrary, often untrusted, tokens -- runs in On^2 time on a token containing a long run of the letter 'y', letting a single 20-50 KB token pin a CPU core CWE-407. Root cause isconsonantword, i was made iterative commit for 3633,...

NLTK: Quadratic CPU Exhaustion in `XMLCorpusView._read_xml_fragment()`

Summary XMLCorpusView.readxmlfragment reads a corpus file in 1 KiB blocks, appending each block to a growing fragment string, then calls VALIDXMLRE.matchfragment on the full accumulated buffer every iteration. Because each iteration rescans the entire accumulated fragment, the total amount of wor...

SUSE CVE-2026-83614

xmldom is a pure JavaScript W3C standard-based XML DOM Level 2 Core DOMParser and XMLSerializer module. Prior to @xmldom/xmldom versions 0.8.15 and 0.9.12, and in xmldom versions 0.3.0 through 0.6.0, two independent quadratic paths can cause denial of service. In lib/sax.js, parseElementStartPart...

EUVD-2026-69421

sqlparse is a non-validating SQL parser module for Python. Prior to 0.6.0, sqlparse.formatsql, reindent=True and sqlformat --reindent route attacker-controlled parenthesized tuple lists through ReindentFilter.getoffset in sqlparse/filters/reindent.py, where flattenuptotoken repeatedly rebuilds an...

CVE-2026-49329

A flaw in openshift/oauth-server allows an unauthenticated attacker to trigger a quadratic-time denial of service by sending a crafted Accept-Language header using '_' separators to the OAuth login and error page endpoints. The root cause is a bypass of the CVE-2022-32149 mitigation : the upstrea...

CVE-2026-83614 xmldom: Quadratic-time parsing via the malformed-input recovery path — `parseElementStartPart` re-scan and `normalize()` adjacent-text merge

xmldom is a pure JavaScript W3C standard-based XML DOM Level 2 Core DOMParser and XMLSerializer module. Prior to @xmldom/xmldom versions 0.8.15 and 0.9.12, and in xmldom versions 0.3.0 through 0.6.0, two independent quadratic paths can cause denial of service. In lib/sax.js, parseElementStartPart...

Duplicate Advisory: Quadratic-time DoS in PorterStemmer via long runs of 'y'

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-ww6m-cw3f-q94g. This link is maintained to preserve external references. Original Description nltk PorterStemmer in versions = 3.10.2 fixed in 3.10.3 contains an inefficient-algorithmic-complexity denial of...

SUSE-SU-2026:3762-1 Security update for python-sqlparse

This update for python-sqlparse fixes the following issues: - CVE-2026-54284: TokenList.init materializes Osubtree value per group, causing CPU DoS before depth/token caps trigger bsc1275459. - CVE-2026-59893: Inefficient Regex Handling of Dollar-Quoted SQL Literals Leads to ReDoS bsc1275461. -...

CVE-2026-59893

sqlparse is a non-validating SQL parser module for Python. Prior to 0.6.0, SQLREGEX in sqlparse/keywords.py and the per-position loop in sqlparse/lexer.py repeatedly scan unmatched dollar-quoted literal and multiline-comment delimiters, causing quadratic CPU consumption through sqlparse.parse,...

sqlparse: TokenList.__init__ materializes O(subtree) value per group, causing CPU DoS before depth/token caps trigger

Summary sqlparse ships hard limits MAXGROUPINGDEPTH=100, MAXGROUPINGTOKENS=10000 intended to bound parsing work on attacker-supplied SQL, but the path that reaches those limits is itself Ondepth per token-group construction. A 1-2 KB SQL payload e.g. SELECT 1 ... with 500-2000 nesting levels, or ...

CVE-2026-71491 sqlparse: Quadratic O(n²) DoS in group_comments

sqlparse is a non-validating SQL parser module for Python. Prior to 0.6.0, groupcomments in sqlparse/engine/grouping.py repeatedly rescans comment-only statements before the MAXGROUPINGTOKENS guard, causing quadratic CPU consumption through sqlparse.parse and sqlparse.formatsql, stripcomments=Tru...

CVE-2026-71491 sqlparse: Quadratic O(n²) DoS in group_comments

sqlparse is a non-validating SQL parser module for Python. Prior to 0.6.0, groupcomments in sqlparse/engine/grouping.py repeatedly rescans comment-only statements before the MAXGROUPINGTOKENS guard, causing quadratic CPU consumption through sqlparse.parse and sqlparse.formatsql, stripcomments=Tru...

GO-2026-6055 Gitea: ParseAcceptLanguage quadratic-time DoS via Locale middleware on unauthenticated requests in gitea.dev

Gitea: ParseAcceptLanguage quadratic-time DoS via Locale middleware on unauthenticated requests in gitea.dev...