8.1

CVE-2016-5387: apache http_server

Modified
AliasesALPINE-CVE-2016-5387MGASA-2016-0262MGASA-2017-0146
Published 19-07-2016Last modified 06-08-2024

Vulnerability summary

CVE-2016-5387 is a high (CVSS 8.1) vulnerability in apache http_server. EPSS estimates a 55.72% chance of exploitation in the next 30 days, higher than 99% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 8.1 (NVD); no exploitation reported by the 5 checked sources; EPSS 56% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
8.1/10
010
High · v3.1 (NVD)
EPSS score
55.72%
0%100%
Critical · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 6 · Duplicates 1 · Related 1
OPENSUSE-SU-2024:10623-1RHSA-2016:1420RHSA-2016:1635RHSA-2016:1636RHSA-2016:1648RHSA-2016:1649

Timeline

  1. 19-07-2016
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

The Apache HTTP Server through 2.4.23 follows RFC 3875 section 4.1.18 and therefore does not protect applications from the presence of untrusted client data in the HTTP_PROXY environment variable, which might allow remote attackers to redirect an application's outbound HTTP traffic to an arbitrary proxy server via a crafted Proxy header in an HTTP request, aka an "httpoxy" issue. NOTE: the vendor states "This mitigation has been assigned the identifier CVE-2016-5387"; in other words, this is not a CVE ID for a vulnerability.

CVSS metrics

7 scores · 5 sources · 3 versions

EPSS trend

Probability

55.72%

Chance of exploitation in the next 30 days

Percentile

99%

Versus all other CVEs

30-day change

No change 0.00 pp

From 55.72% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Redhat29 products
Suse9 products
  • apache2&distro=SUSE Linux Enterprise Server 11 SP4< 2.2.12-64.1
  • apache2&distro=SUSE Linux Enterprise Server 12 SP1< 2.4.16-7.1
  • apache2&distro=SUSE Linux Enterprise Server 12-LTSS< 2.4.10-14.17.1
  • apache2&distro=SUSE Linux Enterprise Server for SAP Applications 11 SP4< 2.2.12-64.1
  • apache2&distro=SUSE Linux Enterprise Server for SAP Applications 12< 2.4.10-14.17.1
Oracle4 products
Debian2 products
  • apache2< 2.4.23-2 | < 2.4.10-10+deb8u5 | < 2.2.22-13+deb7u7
  • debian_linuxEOL8.0
Mageia2 products
  • apache< 2.4.10-16.4.mga5
  • perl-CGI-Emulate-PSGI< 0.200.0-5.1.mga5
Opensuse2 products
Alpine1 product
  • apache2< 2.4.23-r1
Apache1 product
  • http_server≥ 2.2.0, ≤ 2.2.31 | ≥ 2.4.1, ≤ 2.4.23
Canonical1 product
Fedoraproject1 product
Hp1 product
Ubuntu1 product
  • apache2< 2.4.7-1ubuntu4.13 | < 2.4.18-2ubuntu3.1

12 vendors · 54 products

References

84 links
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