How severe is CVE-2017-12867?

CVE-2017-12867 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2017-12867 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-12867?

CVE-2017-12867 affects Simplesamlphp. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-12867?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2017-12867 published?

CVE-2017-12867 was published on 2017-08-29 and last updated on 2026-06-17.

CVE-2017-12867

CVE-2017-12867 is a medium-severity vulnerability in Simplesamlphp with a CVSS 3.x base score of 5.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-613.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v2: 4.3
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-613
Affected product: Simplesamlphp
Published: 2017-08-29
Last modified: 2026-06-17

Description

The SimpleSAML_Auth_TimeLimitedToken class in SimpleSAMLphp 1.14.14 and earlier allows attackers with access to a secret token to extend its validity period by manipulating the prepended time offset.

Frequently asked questions

What is CVE-2017-12867?: The SimpleSAML_Auth_TimeLimitedToken class in SimpleSAMLphp 1.14.14 and earlier allows attackers with access to a secret token to extend its validity period by manipulating the prepended time offset.
How severe is CVE-2017-12867?: CVE-2017-12867 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2017-12867 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-12867?: CVE-2017-12867 affects Simplesamlphp. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-12867?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-12867 published?: CVE-2017-12867 was published on 2017-08-29 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:simplesamlphp:simplesamlphp:*:*:*:*:*:*:*:*

More vulnerabilities in Simplesamlphp

CVE-2018-6521 — Critical (CVSS 9.8): The sqlauth module in SimpleSAMLphp before 1.15.2 relies on the MySQL utf8 charset, which truncates queries upon…
CVE-2017-12873 — Critical (CVSS 9.8): SimpleSAMLphp 1.7.0 through 1.14.10 might allow attackers to obtain sensitive information, gain unauthorized access, or…
CVE-2017-12868 — Critical (CVSS 9.8): The secureCompare method in lib/SimpleSAML/Utils/Crypto.php in SimpleSAMLphp 1.14.13 and earlier, when used with PHP…
CVE-2016-9814 — Critical (CVSS 9.1): The validateSignature method in the SAML2\Utils class in SimpleSAMLphp before 1.14.10 and simplesamlphp/saml2 library…
CVE-2019-3465 — High (CVSS 8.8): Rob Richards XmlSecLibs, all versions prior to v3.0.3, as used for example by SimpleSAMLphp, performed incorrect…
CVE-2018-7711 — High (CVSS 8.1): HTTPRedirect.php in the saml2 library in SimpleSAMLphp before 1.15.4 has an incorrect check of return values in the…

All CVEs affecting Simplesamlphp →

Other CWE-613 (Insufficient Session Expiration) vulnerabilities

CVE-2024-8888 — Critical (CVSS 10.0): An attacker with access to the network where CIRCUTOR Q-SMT is located in its firmware version 1.0.4, could steal the…
CVE-2026-46455 — Critical (CVSS 9.8): Insufficient Session Expiration vulnerability in Apache Camel Keycloak Component. The camel-keycloak security helper…
CVE-2026-21622 — Critical (CVSS 9.8): Insufficient Session Expiration vulnerability in hexpm hexpm/hexpm ('Elixir.Hexpm.Accounts.PasswordReset' module)…
CVE-2025-59786 — Critical (CVSS 9.8): 2N Access Commander version 3.4.2 and prior improperly invalidates session tokens, allowing multiple session cookies to…
CVE-2026-26342 — Critical (CVSS 9.8): Tattile Smart+, Vega, and Basic device families firmware versions 1.181.5 and prior implement an authentication token…
CVE-2026-1435 — Critical (CVSS 9.8): Not properly invalidated session vulnerability in Graylog Web Interface, version 2.2.3, due to incorrect management of…

Browse all CWE-613 (Insufficient Session Expiration) vulnerabilities →