CVE-2018-6519

mediumpriority · track · 31EPSS 0.017 · 77 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.70% (77th) EPSS

CVSS 5 · medium

Is it mine?

9 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-27

The SAML2 library before 1.10.4, 2.x before 2.3.5, and 3.x before 3.1.1 in SimpleSAMLphp has a Regular Expression Denial of Service vulnerability for fraction-of-seconds data in a timestamp.

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · OSV

v3.06.9mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-74USprimaryCWE-74US

affected products (9)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
debian debian linux= 8.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
debian debian linux= 9.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
simplesamlphp saml21.0.0 → 1.10.4nvdUScpe:2.3:a:simplesamlphp:saml2:*:*:*:*:*:*:*:*
simplesamlphp saml22.0.0 → 2.3.5nvdUScpe:2.3:a:simplesamlphp:saml2:*:*:*:*:*:*:*:*
simplesamlphp saml23.0.0 → 3.1.1nvdUScpe:2.3:a:simplesamlphp:saml2:*:*:*:*:*:*:*:*
Packagist simplesamlphp/saml2< 1.10.4osvUSpkg:composer/simplesamlphp/saml2
Packagist simplesamlphp/saml22.0 → 2.3.5osvUSpkg:composer/simplesamlphp/saml2
Packagist simplesamlphp/saml23.0 → 3.1.1osvUSpkg:composer/simplesamlphp/saml2

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-hhm8-2j4g-mpggSimpleSAMLphp SAML2 library Regular Expression Denial of Service vulnerability2022-05-14ghsa · osvUS
The SAML2 library before 1.10.4, 2.x before 2.3.5, and 3.x before 3.1.1 in SimpleSAMLphp has a Regular Expression Denial of Service vulnerability for fraction-of-seconds data in a timestamp.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd osv NVD CVE.org MITRE

published 2018-02-02modified 2026-06-17

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+5979 more

references (5)

External citations — patches, advisories, analysis.

scry

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