Security readout for executives and security teams
Older PHP versions can mis-handle URLs passed to get_headers() when a null byte is included. The function may silently use only the part before that byte, so software can believe it checked one server while actually contacting another. The main business risk is unintended information disclosure or flawed trust decisions in PHP applications that process user-supplied URLs. Exposure is most likely in PHP applications or libraries that pass user-supplied URLs to get_headers(), especially for link validation, metadata checks, redirects, webhook checks, or allowlist decisions. Systems already upgraded beyond the fixed PHP versions or using vendor-patched distro packages are less likely exposed. Treat this as a targeted remediation item, not an emergency. Prioritize systems where PHP accepts external URLs and uses get_headers() in security, routing, or data-disclosure decisions. Standard patching should close most exposure, but affected application logic deserves review. Mitigation focus: Upgrade PHP to 7.2.29, 7.3.16, 7.4.4, or later supported versions.; Apply relevant Debian, Ubuntu, openSUSE, NetApp, or other vendor security updates.; Reject null bytes and unexpected control characters in user-supplied URLs before processing..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-170: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2020-7066 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N3.91.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://bugs.php.net/bug.php?id=79329CVE reference · x_refsource_MISC
- https://security.netapp.com/advisory/ntap-20200403-0001/CVE reference · x_refsource_CONFIRM
- [debian-lts-announce] 20200426 [SECURITY] [DLA 2188-1] php5 security updateCVE reference · mailing-list, x_refsource_MLIST
- USN-4330-2CVE reference · vendor-advisory, x_refsource_UBUNTU
- DSA-4717CVE reference · vendor-advisory, x_refsource_DEBIAN
- DSA-4719CVE reference · vendor-advisory, x_refsource_DEBIAN
- https://www.tenable.com/security/tns-2021-14CVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.